Chapter 9.1, Problem 1E

To determine

The population for the survey on students to check whether the students are left handed or right handed.

Answer to Problem 1E

For null hypothesis $H_0$ population for left handed student is 0.12, for alternative hypothesis $H_a$ population for left handed student not equal to 0.12.

Explanation of Solution

Given Information:

Total sample = 100

Claimed left handed student’s population = 12%

Claimed population is 12%.

Convert 12% into decimal.

  $\frac{12}{100}=0.12$

By the null hypothesis, population value is equal to the 12%.

Thus, $H_0:p=0.12$

By the alternative hypothesis population value can be greater or less than 12% but not exactly equal to 12%.

Thus, $H_a:p\ne 0.12$

Hence, for null hypothesis $H_0$ population for left handed student is 0.12, for alternative hypothesis $H_a$ population for left handed student not equal to 0.12.