Question 101 pts Which of the following is true about the sampling distribution of a mean? Group of answer choices The distribution is non-symmetrical It is normally distributed It is left skewed It is right skewed Question 111 pts We conduct a one-sample z-test to compare a population mean to the reference population when the is known. Group of answer choices sample standard deviation sample mean population mean population standard deviation Question 121 pts Which of the following correctly describes the relationship between the standard normal (2) and the t distribution? Group of answer choices The standard normal is an approximation to the t distribution As the degrees of freedom increase, the t distribution approaches the standard normal As the degrees of freedom decrease, the t distribution approaches the standard normal The t distribution is the inverse operation of the standard normal Question 131 pts Increasing the sample size decreases the margin of error. Group of answer choices True False