Question

True or False:

___________ According to the Central Limit Theorem, the sampling distribution of means approximates a normal distribution given sample sizes greater than 30.

___________ According to the textbook, single sample t-tests are used instead of single sample z-tests when the population standard deviation (σ) is unknown.

___________ A set of events is said to be mutually exclusive when it contains all possible outcomes.

___________ Two-tailed tests predict the direction of the effect

Answer 1

TRUE - According to the Central Limit Theorem, the sampling distribution of means approximates a normal distribution given sample sizes greater than 30.

TRUE - According to the textbook, single sample t-tests are used instead of single sample z-tests when the population standard deviation (σ) is unknown.

FALSE - A set of events is said to be mutually exclusive when it contains all possible outcomes. Because mutually exclusive events mean there is no common region available between two events. I.e intersection is zero.

FALSE- Two-tailed tests predict the direction of the effect. Because A two-tailed test is a test that will be interpreted if the effect meets the criterion for significance and falls in either direction. It cannot predict exact direction.