Question 3 1 pts How are the t distribution and the standard normal (z) distribu

Question

Question 3 1 pts How are the t distribution and the standard normal (z) distribution similar? I. They are both bell-shaped II. They are both centered at o III. Their standard deviations are both 1 OI and lIl Il and IIl only l and II only O I, Il and I1 Question 4 1 pts If the null hypothesis is not rejected, then we say O we do not have sufficient evidence to believe the alternative hypothesis is true O we have sufficient evidence to believe that the sample size is too small O the null hypothesis is true O we have sufficient evidence to believe the alternative hypothesis is false

Explanation / Answer

3)

t distribution and standard normal distribution both are bell-shaped.

t distribution and standard normal distribution both centered at 0.

So correct option is I and II only

4)

If the null hypothesis is not rejected, then we say

Here null hypothesis is not rejected that means we accept the null hypothesis.

So the correct option is

We do not have sufficient evidence to believe the alternative hypothesis is true.

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