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Chapter 11: Q.62 (page 658)

The standard deviation of heights for students in a school is 0.81. A random sample of 50students is taken, and the standard deviation of heights of the sample is 0.96. A researcher in charge of the study believes the standard deviation of heights for the school is greater than 0.81.

What type of test should be used?

Short Answer

Expert verified

A test of single variance should be used.

Step by step solution

01

Given Information

The standard deviation of heights for students in a school is 0.81. A random sample of 50 students is taken, and the standard deviation of heights of the sample is 0.96.

02

Explanation

The standard variation of heights for kids in a school, according to the information, is 0.81.

The standard deviation of the sample heights is 0.81, and a random sample of 50pupils is collected.

When the population variance is similar to certain selected values, we learnt that chi-square analysis for single variance can be applied.

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