Mark the following statements as True or False Sampling dis

Mark the following statements as True or False.

_____ Sampling distribution of sample means is always normal.

_____ Chi-squared distribution is skewed to the right.

_____ A confidence interval gives a range of estimates for an unknown population   

          parameter.

_____In a hypothesis test, a high p-value indicates a strong evidence against the null

          hypothesis.

_____The mean of a sampling distribution of sample proportions is equal to P(1-P)

n

.

Solution

_____ Sampling distribution of sample means is always normal False, need to be n > 30 the sample size need to be greater than 30

_____ Chi-squared distribution is skewed to the right TRUE

_____ A confidence interval gives a range of estimates for an unknown population   

          parameter. TRUE

_____In a hypothesis test, a high p-value indicates a strong evidence against the null

          hypothesis. FALSE, A HIGH P VALUE INDICATES A STRONG EVIDENCE AGAINTS THE ALTERNATIVE HYPOTHESIS

_____The mean of a sampling distribution of sample proportions is equal to P(1-P)

TRUE