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Chapter 10: Q.10.69 (page 427)

You know that the population standard deviations are equal.

Short Answer

Expert verified

For the current circumstance, a pooled ttest should be utilized.

Step by step solution

01

Given Information

The standard deviations of the population are the same.

02

Explanation

The following are the assumptions of the pooled ttest: - The sample should be a simple random sampling from two populations.

  • Each sample is distinct from the others.
  • The population is roughly normal.
  • Population standard deviations are the same.

The non-pooled tassumption is that the chosen sample should be a simple random sampling from two populations.

  • The samples are unrelated to each other.
  • The population is rather normal.
  • The sample size is substantial.

The two standard deviations values are similar in the present circumstance.

For the pooled ttest, this is the assumption.

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