Course Messages Forums Calendar Gradebook | Log Out Home > MAT150.5 - Summer II > Assessment Assignment 7.1 Score: 0/3 0/3 answered Question 2 A simple random sample of size n=86 is obtained from a population with a mean of 31 and a standard deviation of 7. Is the sampling distribution normally distributed? Why? No, the sampling distribution is not normally distributed because the population mean is less than 30. Yes, the sampling distribution is normally distributed because the sample size is greater than 30. No, the sampling distribution is not normally distributed because the population is not normally distributed and sample size is less than 30. Yes, the sampling distribution is normally distributed because the population is normally distributed. Submit Question O M hpvalues has a normal distribution with pi = 142.8 and a = 65.5 If a random sample of sin? [may ' ' . . a 'd'the probability that a single randomly selected value is greater than 168.2. Round your answer I - four decimals. -- 15(3) 168.2) = Find the probability that a sample of size n = 15 is randomly selected with a mean greater than 168.2. Round your answer to four decimals. Home > MAT150.5 - Summer II > Assessment Assignment 7.1 Score: 0/3 0/3 answered Question 3 A population of values has a normal distribution with / = 100 and o = 33.1. A random sample of size n = 200 is drawn. a. What is the mean of the distribution of sample means? HI = b. What is the standard deviation of the distribution of sample means? Round your answer to two decimal places. On = Submit Question M hp