Answered: c) Construct and interpret a 90%…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Searching for help on Part C

A survey of

2320

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

429

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

(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.

p=. 185.185

(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

a simple random sample, the value of

n ModifyingAbove p with caret left parenthesis 1 minus ModifyingAbove p with caret right parenthesisnp1−p

349.798349.798,

which is

greater than or equal to

10, and the

sample size

can be assumed to be

less than or equal to 5% of the

population size.

(Round to three decimal places as needed.)

(c) Construct and interpret a

90%

confidence interval for the population proportion of adults in the country who have donated blood in the past two years. Select the correct choice below and fill in any answer boxes within your choice.

(Type integers or decimals rounded to three decimal places as needed. Use ascending order.)

We are

nothing%

confident the proportion of adults in the country aged 18 and older who have donated blood in the past two years is between

nothing

and

nothing.

There is a

nothing%

chance the proportion of adults in the country aged 18 and older who have donated blood in the past two years is between

nothing

and

nothing.

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