Answer:
1. The sample size is greater than 30.
Step-by-step explanation:
z test is a statistical test, used for hypothesis testing, for verifying statistical significance of a population parameter (from sample statistic)
It is used when in case when the sample size is large, ie greater than 30. It is used when the data follows normal distribution. In case of small sample size, ie less than 30, t test is used.
Santiago has a points card for a movie theater.
He receives 55 reward points just for signing up.
He earns 12.5 points for each visit to the movie theater.
He needs at least 160 points for a free movie ticket.
Write and solve an inequality which can be used to determine xx, the number of visits Santiago can make to earn his first free movie ticket.
Answer:
12
Step-by-step explanation:
The number of visits that Jack can make to earn his first free movie ticket will be at least 12 visits
A die is rolled 600 times with the following results: It landed on one—102 times, two—97 times, three—100 times, four—105 times, five—92 times. What is the empirical probability of rolling an odd number?
Answer:
-496 and the odd number between -97 and -105
What is the equation for a line that passes through the points (2,-2) and (-4,22)?
A.) Y= -4x + 6
B.) Y= 4x + 6
C.) Y= 4x - 6
D.) y= -4x - 6
Answer:
A.) Y= -4x + 6
Step-by-step explanation:
What is the only graph below that has a Hamiliton Path?
When a number is increased by 23. the result is 42. What equation fits this statement?
Answer:
n + 23 = 42
Step-by-step explanation:
Well, let's see.
Let's name the number "n".
So, n + 23 = 42.
And there's your answer.
Hope this helped! :)
Answer:
y + 23 = 42
y = 19
Step-by-step explanation:
y + 23 = 42
Subtract 23 from both sides:
y + 23 - 23 = 42 - 23
y = 19
Cora bought 90 feet of cable for $.25.20. She needs 40 more feet. If the unit price is the same, how much will she pay for the extra 40 feet of cable?
Answer: $11.2
Step-by-step explanation:
Given
Cora bought 90 feet cable for [tex]\$25.20[/tex]
So, the price of a foot is the division of rate and length
[tex]\Rightarrow \text{Price P=}\dfrac{25.20}{90}\\\\\Rightarrow P=\$0.28\ \text{per foot}[/tex]
for additional 40 feet, the cost is
[tex]\Rightarrow 0.28\times 40\\\Rightarrow \$11.2[/tex]
Thus, Cora pays $11.2 for extra 40 feet
1. 20% of 150 is what number?
Answer:
30
Step-by-step explanation:
First, you have to convert 20% into a decimal.
Explanation:
20 ÷ 100 = 0.2
Now multiply 0.2 by 150
Explanation:
0.2 × 150 = 30.
Therefore, 20% of 150 is 30.
PLS HELP NO FAST LINKS!!!
Help me pls Im almost done
Answer:
The probability of picking a purple marble and spinning green is [tex]\frac{3}{28}[/tex].
Step-by-step explanation:
Since there are 7 marbles and 8 possible tiles to spin, the total amount of possible outcomes are 56. Out of the 56 different outcomes, 6 of them meet the requirement of picking a purple marble and spinning green, so the fraction to represent the situation is [tex]\frac{6}{56}[/tex] or [tex]\frac{3}{28}[/tex].
Halla dos numeros enteros sabiendo que al sumarlos se obtiene (-9) y que el mayor de ellos menos 5 es igual al menor
Respuesta:
-7 y - 2
Explicación paso a paso:
Dejemos que los dos números = x y y
x = mayor
y = menor
x + y = - 9 - - - (1)
x - 5 = y - - - (2)
Ponga y = x - 5 en (1)
x + (x - 5) = - 9
x + x - 5 = - 9
2x - 5 = - 9
2x = - 9 + 5
2x = - 4
x = - 4/2
x = - 2
Ponga x = - 2 en y = x - 5
y = - 2 - 5
y = - 7
Find the first three iterates of the function f(z) = 2z + (3 - 2i) with an initial value of zo = 4.
a. 13+ 4i, 28 + 9i, 59+ 20i
c. 11 + 2i, 25 + 6i, 53 + 14i
b. 13 - 4i, 28 - 9i, 59 - 20i
d. 11 - 2i, 25 - 6i, 53 - 14i
Answer:
D. 11 - 2i, 25 - 6i, 53 - 14i
Step-by-step explanation:
correct on EDGE2021
A toy machine has equal numbers of red, white, and blue foam balls which it releases at random. Ross wonders which color ball will be released next. Select the description of how you can use a standard number cube to model and predict this situation.
A.Let multiples of 2 represent red, let multiples of 3 represent white, and let the remaining numbers represent blue. Toss the cube 50 times to determine the experimental probability for each color. Predict that the next ball will be the color with the greatest experimental probability.
B.Since "red" has three letters and "one," "two," and "six" all have 3 letters, let these represent red. Since "blue" has 4 letters and "four" and "five" have four letters, let these represent blue. Since "white" has five letters and "three" has five letters, let this represent white. Toss the cube 50 times to determine the experimental probability for each color. Predict that the next ball will be the color with the greatest experimental probability.
C.Let 1 and 2 represent red, let 3 and 4 represent white, and let 5 and 6 represent blue. Toss the cube 50 times to determine the experimental probability for each color. Predict that the next ball will be the color with the greatest experimental probability.
D.Let even numbers represent red, let odd numbers represent white, and let prime numbers represent blue. Toss the cube 50 times to determine the experimental probability for each color. Predict that the next ball will be the color with the greatest experimental probability.
Answer:
Since there are three colors and a standard number cube has 6 sides, you can let the numbers 1 and 2 represent red, 3 and 4 represent white, and 5 and 6 represent blue. Then roll the number cube repeatedly, recording the results for each roll. After you have recorded a sufficient number of rolls, determine which color was rolled the most often.
RESULT
Let the numbers 1 and 2 represent red, 3 and 4 represent white, and 5 and 6 represent blue.
Option (C) predicts the probability of the above situation correctly is the correct answer.
What is probability?Probability deals with the occurrence of a random event. The chance that a given event will occur. It is the measure of the likelihood of an event to occur.The value is expressed from zero to one.
For the given situation,
A toy machine has equal numbers of red, white, and blue foam balls which it releases at random.
Ross wonders which color ball will be released next.
A standard number cube is used to model and predict this situation.
A standard number cube has six faces namely 1,2,3,4,5,6.
There are three foam balls. If we assign two numbers for each foam, then we can able to predict the probability of next foam by rolling it for number of times.
Thus from the given options, Let 1 and 2 represent red, let 3 and 4 represent white, and let 5 and 6 represent blue. Toss the cube 50 times to determine the experimental probability for each color. Predict that the next ball will be the color with the greatest experimental probability. This option determines the above situation.
Hence we can conclude that option (C) predicts the probability of the above situation correctly is the correct answer.
Learn more about probability here
https://brainly.com/question/16970284
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Solve the equation below. you must show all your work, and have the correct answer.
9x + 10 = 12x – 11
Answer:
x=7
Step-by-step explanation:
You need to bring 9x to the right side and bring '-ll' to the left side so it will be 11+10 = 12x-9x. Then you calculate 11+10, which is 21, then you subtract 12x to 9x. Then it will be 21 = 3x. Lastly, you divide 3 on both sides of the equation and get x to be 7!
Answer:
x=7
Step-by-step explanation:
9x+10=12x-11
-9x. -9x. subtract 9x from both sides
10 = 3x-11
+11 +11. add 11 to both sides
21 =3x
divide by 3x (21 ÷3=7) therefore x=7
area of a triangle pls help meeee
Answer:
50
Step-by-step explanation:
Bxh/2
10x10=100
100/2= 50
HOW MANY SOLUTIONS DOES
THIS SYSTEN OF EQUATIONS HAVE
y = 2x + 2
y = 2x + 2
Answer: Infinitely many solutions.
Step-by-step explanation:
I need help wit math rq pls! :(
A game has a deck of cards with 5 red cards and 3 blue cards. You randomly choose one card and without replacing it choose another card. What is the probability of choosing a red card and then a blue card?
A: 2/7
B:10/49
C:15/56
D:15/64
Answer: C (15/56)
Step-by-step explanation:
probability of red card: 5/8
probability of blue card (after): 3/7
5/8 times 3/7 = 15/56 so C
Which statements are true about the shapes? Select three options.
Figure A is a cylinder. Figure B is a cone. Figure C is a sphere. Figure D is a pyramid with rectangular base.
A Figure A is a cylinder.
B Figure B is a square pyramid.
C Figure C has no bases.
D Figure D is a triangular prism.
E Figure D has four lateral faces that are triangles.
Answer:
C Figure C has no bases.
D Figure D is a triangular prism.
A Figure A is a cylinder.
Step-by-step explanation:
Answer:
B,D,C
Step-by-step explanation:
because thats the anwser
What is
(7x-3) = (12x+12)
Answer:
x=-3
Step-by-step explanation:
30 + = 45
А
15
в 3,045
с
14
D
60
Answer: 15=45
Step-by-step explanation:30+15=45=15
Answer:
A.15
Step-by-step explanation:
30+15=45
Please help
Extra hundred points and brainleist
Answer:
A
Step-by-step explanation:
It is A. The problem asks for the interval when the marlin's height is always increasing. Therefore, you want to look at the left half of the parabola, as the line is going into the peak. The right half is declining. The peak is at around 2 (on the x-axis), so you know that the ending interval number has to be 2. The marlin's height begins to go up starting at 0, so the interval is 0 <= x <= 2. Any number past two is a declining height, and the increase starts at 0.
Solve please I really need this answer so if you k ow it please solve it thank u
Answer:
E
Step-by-step explanation:
2/3 times 1/2 is equal to 1/3 and 1/3 times 1/2 is equal to 1/6 yea I'm pretty smart
given the point and slope write the equation of the line 9,-4; slope -2/3
Mrs. Williams uses the following recipe for crispy rice treats. She decides to make 2/3 of the recipe. Recipe: 2 cups melted butter, 24 oz marshmallows 13 cups rice crispy cereal. How much of each ingredient will she need? Write an expression that includes multiplication
The area of a rectangle is 479.4 square feet. The width of the rectangle is 17 feet.
What is the length of the rectangle? *
1. 28.2 feet
2. 190.4 feet
3. 30.94 feet
4. 239.7 feet
The answer is 28.2 because 479.4 ft. ÷ 17 ft. = 28.2 ft.
blahh
I don't like myself
But maybe it's all in my head And I am not the words I've said These images they sell Maybe none of it is real And I could love the way I feel
Answer:
?
Step-by-step explanation:
oh my god wow you're so quirky
Please help with 19 and 20 find domain and range
i was running in a marathon i was in last place then i oveer toke the second place runner what place am i now?
ur in second place
Hopefully it will help u
Select the two correct solutions of the inequality x + 8 > 14.
A. 6
B. 4
C. 8
D. 2
E. 10
Answer:
Step-by-step explanation:
So basically you’re asking if blank plus 8 is greater than 14 so the answers would be 8 and 10
16\5 divided by 8\15
Answer:
6
that's the answer
hope it helps