Question

A survey of

2287

adults in a certain large country aged 18 and older conducted by a reputable polling organization found that

406

have donated blood in the past two years. Complete parts​ (a) through​ (c) below.

Click here to view the standard normal distribution table (page 1).

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Click here to view the standard normal distribution table (page 2).

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​(a) Obtain a point estimate for the population proportion of adults in the country aged 18 and older who have donated blood in the past two years.

ModifyingAbove p with caret

equals. 178

​(Round to three decimal places as​ needed.)

​(b) Verify that the requirements for constructing a confidence interval about p are satisfied.

The sample

▼

can be assumed to be

cannot be assumed to be

is stated to be

is stated to not be

a simple random​ sample, the value of

▼

n ModifyingAbove p with caret

ModifyingAbove p with caret left parenthesis 1 minus ModifyingAbove p with caret right parenthesis n ModifyingAbove p with caret left parenthesis 1 minus ModifyingAbove p with caret right parenthesis

n

ModifyingAbove p with caret

is

nothing

​,

which is

▼

greater than or equal to

less than

​10, and the

▼

sample size

sample proportion

population size

population proportion

▼

is stated to not be

is stated to be

cannot be assumed to be

can be assumed to be

less than or equal to​ 5% of the

▼

sample size.

population size.

sample proportion.

population proportion.

​(Round to three decimal places as​ needed.)

Answer 1

a) The point estimate is = 406/2287 = 0.178

B) The sample a simple random sample, the value of is greater than Or equal to 10 and the sample size is less than or equal to 5% of the population size.

= 2287 * 0.178 * (1 - 0.178) = 334.625