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Rom4ik [11]
2 years ago
9

Suppose that a survey was taken of 32 people and each person was asked if they approved or disapproved of the president's action

s during the government shutdown. Nineteen people said that they approved. Which of the following statements correctly describes how the confidence interval for the population proportion of people that approved the President's actions during the government shutdown? Group of answer choices There are not 15 observed successes and 15 observed failures. A confidence interval can not be done. There are not 15 observed successes and 15 observed failures. A confidence interval can be computed by adding 2 successes and 2 failures. There are not 15 observed successes and 15 observed failures. A confidence interval can be computed by adding 4 successes and 5 failures. There are at least 15 observed successes and 15 observed failures. A large sample confidence interval for the population proportion can be computed (phat +/- z * sqrt(p*(1-p)/n) with no additional values added.
Mathematics
1 answer:
erastova [34]2 years ago
5 0

Answer:

Option c

Step-by-step explanation:

--The large-sample confidence interval

formula for proportions is valid if np ≥ 15 and n(1-p) ≥ 15. The large sample confidence

interval only contain the true value a certain percentage of the time. A 95% CI will contain the

value 95% of the time. You add 2 successes and 2 failures.

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Solve for r.

You want to get r by itself on one side on the equal sign.

bh + hr = 25

Subtract bh from both sides.

hr = 25 - bh

Divide h on both sides.

r = 25 - bh / h

The two h's cancel each other out.

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Hope this helps!
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2 years ago
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The number of bacteria in a culture is given by the function n(t) =950e^0.45t Where t is measured in hours A) what is the contin
tatiyna

Answer:

a) The continuous rate of growth of this bacterium population is 45%

b) Initial population of culture at t = 0 is 950 bacteria

c) number of bacterial culture contain at t = 5 is 9013 bacteria

Step-by-step explanation:

The number of bacteria in a culture is given by

n(t) = 950e^{0.45t}

a) rate of growth is

Bacteria growth model N(t) = noe^{rt}

Where r is the growth rate

hence r = 0.45

              = 45%

b) Initial population of culture at t = 0

n(0) = 950e^{0.45(0)}

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The domain would be x ≥ 0.

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The store marks up the price by approximately 710%.

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We are given to understand as per the problem that one must save 10% of their take home pay.

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