Answered: Does this provide evidence that the…

Name: In a survey of 240 students in an elementary statistics class at the U
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Description: In a survey of 240 students in an elementary statistics class at the University of California-Davis (UCD), 30 said that they were left-handed and 210 said that they were right-handed. Assume that the students are representative of all students at the

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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In a survey of 240 students in an elementary statistics class at the University of California-Davis (UCD), 30 said that they were left-handed and 210 said that they were right-handed. Assume that the students are representative of all students at the school. Does this provide evidence that the proportion of UCD students who are left-handed differs from the national proportion of 0.10? Carry out the five steps of the hypothesis test for this situation. (Use ? = 0.05.)

Set up the null and alternative hypothesis. (Enter != for ≠ as needed.)

H₀:

H_a:

Compute the test statistics for this situation. (Round your answer to two decimal places.)

z =

Calculate the p-value for the test. (Round your answer to four decimal places.)

p-value =

On the basis of the p-value, make a conclusion for this situation.

Reject the null hypothesis because the p-value is greater than 0.05.

Do not reject the null hypothesis because the p-value is smaller than 0.05.

Reject the null hypothesis because the p-value is smaller than 0.05.

Do not reject the null hypothesis because the p-value is greater than 0.05.

Write a conclusion to this situation in words.

We _____ conclude that the proportion of UCD students who are left-handed differs from the national proportion.

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