Estimate the population mean within a confidence interval of .99. What will be an ideal ...

Estimate the population mean within a confidence interval of .99.
 
  What will be an ideal response?

Question 2

The higher the likelihood of rejecting null when null really should be
   rejected, then
 
  a. the higher becomes the value of beta
  b. the less powerful the statistical test
  c. the more powerful the statistical test
  d. none of these, since rejecting the null hypothesis is not related to either
   power or beta.

Question 3

Among elementary school children, the correlation between strength and
  weight is .60, and the correlation between strength and age is .70. The
  correlation between weight and age is .80. (All correlations are
  significant).
 
  What is the partial correlation between strength and weight,
  holding age constant?
 
 
 What will be an ideal response?

Question 4

A powerful test is one that is
 
  a. less likely to commit the Type 2 error
  b. more likely to commit the Type 2 error
  c. more likely to accept the null hypothesis
  d. less likely to detect a population difference