According to a publication, 13.9% of 18 to 25-year-olds were users of marijuana in 2000. A recent poll of 1366 randomly selected 18 to 25-year-olds revealed that 221 currently use marijuana. At the 1% significance level, do the data provide sufficient evidence to conclude that the percentage of 18 to 25-year-olds who currently use marijuana has changed from the 2000 percentage of 13.9%? Use the one-proportion z-test to perform the appropriate hypothesis test, after checking the conditions for the procedure. What are the hypotheses for the one-proportion z-test? H0: p=nothing; Ha: p ▼ greater than> less than< not equals≠ nothing (Type integers or decimals.) What is the test statistic? z=nothing (Round to two decimal places as needed.) Identify the P-value. The P-value is nothing. (Round to four decimal places as needed.) What is the correct conclusion for the hypothesis test? A. Do not reject H0; the data do provide sufficient evidence to conclude that the percentage who currently use marijuana has changed from 13.9%. B. Reject H0; the data do provide sufficient evidence to conclude that the percentage who currently use marijuana has changed from 13.9%. C. Reject H0; the data do not provide sufficient evidence to conclude that the percentage who currently use marijuana has changed from 13.9%. D. Do not reject H0; the data do not provide sufficient evidence to conclude that the percentage who currently use marijuana has changed from 13.9%.

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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According to a publication,

13.9% of 18 to 25-year-olds were users of marijuana in 2000. A recent poll of 1366 randomly selected 18 to 25-year-olds revealed that 221 currently use marijuana. At the 1% significance level, do the data provide sufficient evidence to conclude that the percentage of 18 to 25-year-olds who currently use marijuana has changed from the 2000 percentage of

13.9%?

Use the one-proportion z-test to perform the appropriate hypothesis test, after checking the conditions for the procedure.

What are the hypotheses for the one-proportion z-test?

H0:

p=nothing;

Ha:

▼

greater than>

less than<

not equals≠

nothing

(Type integers or decimals.)

What is the test statistic?

z=nothing

(Round to two decimal places as needed.)

Identify the P-value.

The P-value is

nothing.

(Round to four decimal places as needed.)

What is the correct conclusion for the hypothesis test?

Do not reject

H0;

the data

provide sufficient evidence to conclude that the percentage who currently use marijuana has changed from

13.9%.

Reject

H0;

the data

provide sufficient evidence to conclude that the percentage who currently use marijuana has changed from

13.9%.

Reject

H0;

the data

do not

provide sufficient evidence to conclude that the percentage who currently use marijuana has changed from

13.9%.

Do not reject

H0;

the data

do not

provide sufficient evidence to conclude that the percentage who currently use marijuana has changed from

13.9%.

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