Answer:
97.5% of newborn babies born in the maternity wing of this hospital can be expected to have birth weight greater than 2250 grams.
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.
Approximately 95% of the measures are within 2 standard deviations of the mean.
Approximately 99.7% of the measures are within 3 standard deviations of the mean.
The normal distribution is symmetric, which means that 50% of the values are below the mean and 50% are above.
In this problem, we have that:
Mean of 3300, standard deviation of 525.
What percent of newborn babies born in the maternity wing of this hospital can be expected to have birth weight greater than 2250 grams?
2250 = 3300 - 2*525
2250 is 2 standard deviations below the mean.
Of the 50% of the weights below the mean, 95% are going to be greater than 2250(less than 2 standard deviations of the mean).
Of the 50% of the weights above the mean, 100% are going to be greater than 2250.
So
[tex]p = 0.5*0.95 + 0.5 = 0.975[/tex]
0.975*100% = 97.5%
97.5% of newborn babies born in the maternity wing of this hospital can be expected to have birth weight greater than 2250 grams.
what is 2/5 of 2/3 =
Answer:
2/5Step-by-step explanation:
2/5. 2/3 of a number means that you divide it by 3 and multiply by 2. 3/5 divided by 3 is 1/5. 1/5 multiplied by 2 is 2/5, which is the answer. Hope this helps! :).Hopes this helps. Mark as brainlest plz!Answer:
.266666... or [tex]\frac{4}{15}[/tex]
Step-by-step explanation:
Multiply the numerator by the other numerator, in this case it would be 2 * 2, to get 4. This is your numerator for the answer.
Then do the same for the denominators. 5 * 3 is 15.
Therefore, your answer is [tex]\frac{4}{15}[/tex]
Hope that this helps!
Write an equation and solve:
Kiran is trying to save $144 to buy a new guitar. she has $34 and is going to save $10 a week from money she earns mowing lawns. she wants to know how money weeks it will take her to have enough money to purchase the guitar.
Answer:
11 weeks
Step-by-step explanation:
34+10x=144 equation
10x=110
x=11
check answer
11*$10=$110 money after 11 weeks at $10/week
+. 34 money saved
=. 144 money needed.
Suppose that documentation lists the average sales price of a single-family home in the metropolitan Dallas/Ft. Worth/Irving, Texas, area as $213,200. The average home price in Orlando, Florida, is listed as $198,000. The mean of a random sample of 43 homes in the Texas metroplex was $217,800 with a population standard deviation of $30,300. In the Orlando, Florida, area a sample of 35 homes had a mean price of $204,700 with a population standard deviation of $33,800. At the 0.05 level of significance, can it be concluded that the mean price in Dallas exceeds the mean price in Orlando
Answer:
"0.0373" seems to be the appropriate solution.
Step-by-step explanation:
The given values are:
n₁ = 43
n₂ = 35
[tex]\bar{x_1}=217800[/tex]
[tex]\bar{x_2}=204700[/tex]
[tex]\sigma_1=30300[/tex]
[tex]\sigma_2=33800[/tex]
Now,
The test statistic will be:
⇒ [tex]Z=\frac{\bar{x_1}-\bar{x_2}}\sqrt{\frac{\sigma_1^2}{n_1} +\frac{\sigma_2^2}{n_2} }[/tex]
On substituting the given values in the above formula, we get
⇒ [tex]=\frac{217800-204400}{\sqrt{\frac{(30300)^2}{43} +\frac{(33800)^2}{35} } }[/tex]
⇒ [tex]=\frac{217800-204400}{\sqrt{\frac{918090000}{43} +\frac{1142440000}{35} } }[/tex]
⇒ [tex]=\frac{13400}{7347.93}[/tex]
⇒ [tex]=1.7828[/tex]
then,
P-value will be:
= [tex]P(Z>1.7828)[/tex]
= [tex]0.0373[/tex]
Which fraction below represents a repeating decimal?
A 1/4 B 6/4 C 19/2
D 22/12
Answer:
1/9
Step-by-step explanation:
niether is really an answer its
x + 2y = 4
4x + 8y = 64
find how many solutions there is
Answer:
No solutions
Step-by-step explanation:
Multiply the top equation by 4
4x + 8y = 16
now both equations have the same left hand side
4x + 8y
but one equals 16 the other 64
Therefor: no solutions
Answer:
Step-by-step explanation:
Multiply the top equation by 4
4x + 8y = 16
now both equations have the same left hand side
4x + 8y
but one equals 16 the other 64
( simultaneous equations )
Use the following net to find the surface area of the solid figure
144 yd2
48 yd2
88 yd2
94 yd2
Answer:
94 yards^2
Step-by-step explanation:
Follow the rule for the Surface Area of a Rectangular Prism.
Formula: SA = 2lw + 2lh + 2wh
Substitute the values and you'll be fine.
Pls mark Brainliest and have a great day!!!
The Surface area of solid is 94 yd².
What is Surface area?
The surface area of a three-dimensional object is the total area of all its faces.
Here, Given area of the solid are 12 yd², 8 yd², 24 yd², 8 yd², 12 yd², 24 yd², and 6 yd²
Total Surface area = 12 + 8 + 24 + 8 + 12 + 24 + 6
= 94 yd²
Thus, the Surface area of solid is 94 yd².
Learn more about Surface Area from:
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Find the missing side length. Leave your answer as a radical in the simplest form
Please help...no links
9514 1404 393
Answer:
x = y = 12
Step-by-step explanation:
A right triangle with a 45° angle is an isosceles right triangle. That means the legs are both the same length. The side ratios of such a triangle are ...
1 : 1 : √2
Multiplying these ratios by 12 gives ...
12 : 12 : 12√2 = x : y : 12√2
The side lengths x and y are both 12 units.
(No links :>)
Please answer the picture below. Tysm ^^
Answer:
1 and 3
Step-by-step explanation:
if you solve
5(a+4) it equals
5a +20
Answer:
1 and 3
Step-by-step explanation:
1. 5(a+4) Distribute = 5a+5*4 = 5a +20
2. 5a+4
3. 5a+20
4 5*a*4 = 20a
The two that are equal are 1 and 3
Can someone help me please?
9515 1404 393
Answer:
10 inches
Step-by-step explanation:
Use the formula for the area of a trapezoid. Fill in the given information and solve for the unknown.
A = 1/2(b1 +b2)h
50 in² = (1/2)(3 in +7 in)h
50 in²/(5 in) = h . . . . . . . . . . divide by the coefficient of h
10 in = h
The height of the trapezoid is 10 inches.
i will give Brainiest if you are right
a submarine is at the surface of the ocean, preparing to dive. it submerges and dives -993 ft. then it ascends 308 ft to avoid hitting an undersea cliff. what integer represents the submarines position in ft after it ascends to avoid the cliff?
A. 1,301
B. 685
C. -1,301
D. -685
Answer:
[tex]\text{D. -685}[/tex]
Step-by-step explanation:
Let the submarine's initial position be 0. After diving 993 feet, its position will be -993 ft. The submarine then ascends 308 feet, meaning its final position will be [tex]-993+308=\boxed{-685}[/tex].
You try to explain the number of IBM shares traded in the stock market per day in 2005. As an independent variable you choose the closing price of the share. This is an example of A. invalid inference due to a small sample size. B. sample selection bias since you should analyze more than one stock. C. simultaneous causality.
Answer:
This is an example of
C. simultaneous causality.
Step-by-step explanation:
Simultaneous causality eliminates the conclusion that is often taken for granted to the effect that one variable is a response variable while the other is an explanatory variable because the two variables, the price and the number of shares, influence each other at the same time. When more shares are traded than demanded in the stock market in any day, the price tends to go down, and vice versa.
A patient has been instructed to drink a gallon of water each day. How many cups does the patient
need to drink?
Thank
Answer:
16 cups a day
Step-by-step explanation:
Select the correct answer.
What is the value of this expression if a = -7 and b = -3?
a3 – b2
Α.
-352
B.
-30
C.
-334
D.
-12
The value of this expression if a = -7 and b = -3 is -352
Equation
Equation is an expression used to show the relationship between two or more numbers or variables.
Given that a = -7 and b = -3
Hence:
a³ - b²
Substituting the values of a and b:
= (-7)³ - (-3)²
= -343 - 9
Simplifying the equation:
= -352
a³ - b² = -352
The value of this expression if a = -7 and b = -3 is -352
Find out more on Equation at: https://brainly.com/question/13763238
i need to know plz help
Answer:
122in^2
Step-by-step explanation:
A= 10x10x3.14 = 314in^2
Ar= 12x16= 192in^2
Asr= 314-192= 122in^2
Q11. What should be subtracted from -5/3 to get -2/7?
0 29/21
O o C
- 21/29
- 29/21
O 21/29
Helpp plzz will mark brainleast
Answer:
a d e
Step-by-step explanation:
hope this helps mark me brainleast :)
Nine people in a square
If there are nine people in a square, then there will be 3 rows and 3 columns.
Because 3² = 9 or √9 = 3
Help please ASAP thank you!! your awesome if you help
Answer:
Perimeter=56 units
Area =196 square unites
Step-by-step explanation:
The diagonal would be 14√2.
The formula for area using the diagonal is 1/2d².
1/2x(14√2)²=1/2x196x2=196
For perimeter, s²+s²=392
2s²=392
s²=196
s=√196
s=14
14x4=56
How many shapes can you make by taking plane sections from a sphere?
Answer:
One.
Step-by-step explanation:
Every possible plane section of a sphere will produce a circle.
Francesco built a box to store his baseball cards. The box is shown below.
Francesco needed more storage and built a similar box that was one-half of each the length, the width,
and the height of the first box. By what factor does the change in dimension between the two boxes
affect the volume?
ILL GIVE BRAINLIEST
Answer:
Option B
Step-by-step explanation:
Scale factor by which the dimensions of the new box was dilated = [tex]\frac{1}{2}[/tex]
In other words, dimension scale factor = [tex]\frac{1}{2}[/tex]
Relation between volume scale factor and dimension scale factor is,
Volume scale factor = (Dimension scale factor)³
Therefore, volume scale factor of the smaller box = [tex](\frac{1}{2})^3[/tex]
= [tex]\frac{1}{8}[/tex]
Since, volume scale factor = [tex]\frac{\text{Volume of the dilated figure}}{\text{Volume of the original figure}}[/tex] = [tex]\frac{1}{8}[/tex]
Therefore, volume of the smaller box = Volume of the larger box
Option B will be the answer.
Which statement explains how to calculate the mean of a set of data? O A. Subtract the smallest from the largest value. O B. Add the largest and the smallest values and divide by 2. O C. Find the sum of all the values and then divide by the number of values. OD. Organize the data from least to greatest and find the value in the middle. O E. Organize the data from least to greatest and Identify which value is repeated the most often.
Answer: Where is the data?... where I can solve it
Step-by-step explanation:
Question:
Which statement explains how to calculate the mean of a set of data? O A. Subtract the smallest from the largest value. O B. Add the largest and the smallest values and divide by 2. O C. Find the sum of all the values and then divide by the number of values. OD. Organize the data from least to greatest and find the value in the middle. O E. Organize the data from least to greatest and Identify which value is repeated the most often.
Answer:
CStep-by-step explanation:
Mean is just another name for average. To find the mean of a data set, add all the values together and divide by the number of values in the set. The result is your mean !
Toys r Us sells Pokémon cards in packs of 12 for $16.87. Walmart sells them in packs of
6 for $8.36. Justify the better deal.
The film The Lord of the Rings: The Return of the King, the last installment of The Lord of the Rings trilogy, was directed by Peter Jackson and released on December 17 2003 in the U.S. with huge success. Eventually, the film won 11 Oscars for all of its nominations. The film's box office has been more than $1 billion. In the film, there are long sequences in which not all main characters appear at the same time. And there are big scenes where everybody shows up. Thinking about the making of the film, behind the scenes, we can hypothetically break down the entire cinematic project into the following aggregate activities (We assume away all the complexities in shooting the three installments at the same time and other production details):
‐ Plan, screenplay, finance, cast, film crew, location
‐ Construction of movie sets
‐ Shooting sequence 1
‐ Shooting sequence 2
‐ Shooting sequence 3
‐ Big scene sequence
‐ Post‐production & finalization before release
We have the following hypothetical data on time in months and cost in millions of dollars:
ID IP T ES EF LS LF SLK NT NC CT CC CCR
A ‐ 6.0 6.0 13.0 6.0 13.0
B A 4.0 4.0 9.0 3.0 12.0
C B 4.0 4.0 12.0 4.0 12.0
D B 5.0 11.0 5.0 14.0 4.0 16.0
E B 6.0 0.0 6.0 16.0 4.0 19.0
F C,D,E4.0 4.0 19.0 4.0 19.0
G F 6.0 6.0 11.0 5.0 13.5
Note: IP = Immediate Predecessor; T = NT = Normal Time; ES = Earliest Start; EF = Earliest Finish; LS = Latest Start; LF = Latest Finish; SLK = Slack Time; NT = Normal Time; NC = Normal
Cost; CT = Crash Time; CC = Crash Cost; & CCR = Crash Cost/Time Unit (Crash Cost Rate).
Copy the table to your homework and complete the following parts:
By looking at the chart in part (a), find all possible paths through the network with their corresponding path times. Based on these path times, determine the critical path.
Based on part (a) By using the forward and backward passes together with the four time determination rules, fill your calculations for ES,
EF, LS, LF, and SLK in the appropriate cells.
(b) [2] Try to independently fill in the columns ES, EF, LS, LF, and SLK of the table. If you have difficulties, refer to part (a). Determine the activity with the most slack time.
c) [2] Based on part (a), find the critical path by going through the activities with no slack time.
Compare this result with the critical path found in part (b).
d) Use appropriate data to compute crash costs per time unit and fill in the CCR column. Cross out any CCR cells where the corresponding activities cannot be crashed.
(e) [2] Find the total normal cost of the film. Find the normal cost on the original critical path. Compute the cost proportion of the critical path in the film's budget.
Solve for x in the triangle below. Round your answer to the nearest tenth
Please is the last one
4 mint left
Answer:
50
Step-by-step explanation:
11. Find the diameter of a circle with an area of 240.257 square millimeters. Round the answer to the nearesttenth.
Answer:
17.49
Step-by-step explanation:
A=πr2
d=2r
d=2A
π=2·240.26
π≈17.49013
The circumference of the tire of Melvin’s cycle is 2.5m. He took part in a race of 2km. When
he had covered 1.2km, the tire burst. To finish the race, how many more times should the wheel go
round?
Answer:
320
Step-by-step explanation:
Distance to go
2km - 1.2 km = 0.8km = 800m
Revolutions needed
800/2.5 = 320
There are 6 blue marbles, 7 black marbles, 4 orange marbles, and 3 green marbles in a bag. Once a marble is drawn, it is replaced. Find
the probability of the outcome.
Find P(Blue, Orange, and then Green)
which one is the right answer:
9/1000
3/500
6/35
0
Answer:
Hello! answer 9/1000
Step-by-step explanation:
All you have to do is multiply the probability of each then you will get your answer so...
6/20 × 4/20 × 3/20 = 9/1000 So thats your probability. Hope that helps!
7≥12−g solve for inequality
Plzz help me Its from khan academy
Answer:
g= 4 and g =5
Step-by-step explanation:
Answer: g = 5 and g = 6
Step-by-step explanation:
trust me </3
Convert the measurement indicated.
96 in to feet
96 in = 11 ft
foot ×12 =inch
here,
inch=96
foot=?
now
foot = inch /12
foot = 96/12
foot= 8 ft