Question

Asked Nov 18, 2019

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when comparing the means of samples from two normally distributed populations, if the samples are independent and the population variences are known, the z test can be used.

A). true

B). false

Step 1

Conditions for using z-test is,

- The samples are randomly selected.
- The samples are independent.
- Sample size for each sample is greater than 30.
- Or ...

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