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DiKsa [7]
3 years ago
14

A band selects 404040 ticket-holders at random from each concert to win t-shirts. The band knows that 55\%55%55, percent of the

ticket-holders buy their tickets at least a month before the concert. Suppose the band calculated the proportion \hat p
p
^
​ of winners from each concert who bought their tickets at least a month before the concert.
Which of the following distributions is the best approximation of the sampling distribution of \hat p
p
^
​ ?
Each distribution uses the same scale.
Choose 1 answer:
Choose 1 answer:

(Choice A, Checked)
A


(Choice B)
B


(Choice C)
C


(Choice D)
D
Mathematics
1 answer:
drek231 [11]3 years ago
3 0

Answer:

They would be normally distributed.

Step-by-step explanation:

Because there are more than 30 samples, the distribution would closely resemble the normal distribution.

40 ticketholders are winning the contest. 40 ≥ 30. This is enough to make the distribution approximately normal.

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marshall27 [118]
29028 + 1312 = 30340
5 0
3 years ago
Help me please i dont understand
matrenka [14]

Answer:

22

Step-by-step explanation:

The line where it says 2cm, extend that line to the top. You know have 2 triangles, call the one on the left A and the one on the right B

area of recntangle = bh

Rect A:

b = 5

h = 4 - 2

h = 2

bh = 5 x 2

bh = 10

Rect B:

b = 3

h = 4

bh = 4 X 3

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Total = 10 + 12

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5 0
1 year ago
Suppose f varies inversely with g and that f = 28 when g = 2. What is the value of f when g = 7?
Lesechka [4]

Make up the proportion

28*2=x*7\\7x=56\\x=8

P.S. Hello from Russia

3 0
3 years ago
Read 2 more answers
Jerry charges $15 for each lawn that he cuts. Depending homework and chores, he has time to cut at most 10 lawns a week. Jerry h
vova2212 [387]

Answer:  D) Number of yards Jerry cuts; 0 ≤ x ≤ 10  

Step-by-step explanation:

Here the given function that describes the total profit,

y = 15 x - 10

Where x represents the number of lawns Jerry cut in a week.

But, Depending homework and chores, he has time to cut at most 10 lawns a week.

Thus, x ≤ 10

Also, the number of lawns can not be negative.

Therefore, x ≥ 0

And, the value of x will decide the domain of the function y,

Thus, the domain of the given function is,

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⇒ Option D is correct.



6 0
3 years ago
Read 2 more answers
Solve the following equation <br> 6x-3=4z+9
Pie

Answer:

z=1.5

Step-by-step explanation:

Simplifying

6z + 3 + -4z = 9

Reorder the terms:

3 + 6z + -4z = 9

Combine like terms: 6z + -4z = 2z

3 + 2z = 9

Solving

3 + 2z = 9

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '-3' to each side of the equation.

3 + -3 + 2z = 9 + -3

Combine like terms: 3 + -3 = 0

0 + 2z = 9 + -3

2z = 9 + -3

Combine like terms: 9 + -3 = 6

2z = 6

Divide each side by '2'.

z = 3

Simplifying

z = 3

8 0
3 years ago
Read 2 more answers
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