1 If we know that the length of time it takes a college student to find a parking spot in the library parking lot follows a normal distribution with a mean of 4.5 minutes and a standard deviation of 3.2 minute, find the probability that a randomly selected college student will find a parking spot in the library parking lot in less than 4 minutes. 0.4379 0.5000 0.5620 0.9999 10 points Question 2 If we know that the length of time it takes a college student to find a parking spot in the library parking lot follows a normal distribution with a mean of 4.5 minutes and a standard deviation of 3.2 minute, find the point in the distribution (how many minutes) that 97.5% of the college students exceed when trying to find a parking spot in the library purling lot. 4.5 minutes 7.7minutes 9.6 minutes 10.77 minutes 10 points Question 3 Given a random sample from a distribution, the variance of the sample mean (V1) and the variance of the original distribution (V2) have the following relationship: V1 < V2 V1=V2 V1>V2 V1 and V2 are not related in any way 10 points Question 4 a non-symmetric distribution, the variance equals the standard deviation True False 10 points Question 5 Marginal probability is also called simple probability True False 10 points Question 6 The Standard Normal Distribution has a mean of 0 and standard deviation of 1. True False 10 points Question 7 The more symmetric the population the smaller the sample size that is needed for the sampling distribution of the mean to become approximately normally distributed True False 10 points Question 8 f the p-value is less than 0.05, the null hypothesis is accepted. True False 10 points Question 9 The t distribution is used to construct confidence intervals for the population mean. When the sample size is large and the population variance is known When the sample size is small and the population variance is unknown When the sample size is small and the population variance is known When the sample size is large and the population variance is unknown 10 points Question 10 To compute the sample size for the mean, you must know which of the following: The desired confidence level The acceptable sampling error The size of the population The standard deviation