Mark the following statements as True or False. _____ Sampling distribution of s

Question

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 an estimation about an unknown population parameter.

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

. _____ Correlation coefficient is not resistant to outliers. _

____ In a hypothesis test for the difference of two means with independent samples, the alternate hypothesis statement should be always two tailed.

Explanation / Answer

_____ Sampling distribution of sample means is always normal. [FALSE. It needs a large enough sample size to do this.]

_____ Chi-squared distribution is skewed to the right. [TRUE.]

_____ A confidence interval gives an estimation about an unknown population parameter. [TRUE]

_____ In a hypothesis test, a high p-value indicates a strong evidence against the null hypothesis [FALSE. That refers to a low P value.]

. _____ Correlation coefficient is not resistant to outliers. _ [TRUE]

____ In a hypothesis test for the difference of two means with independent samples, the alternate hypothesis statement should be always two tailed. [FALSE. It can be one tailed as well.]

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