Choose the letter of the best/correct answer.

• The distribution of student weights in a public high school has a mean of = 55.5 and a standard deviation of = 7.5. The weights of students do not follow a normal distribution. The research coordinator of the school randomly sampled a total of 500 students from this population. Can you say that the sampling distribution is approximately normal?

a. yes b. no c. only sometimes d. lacks more information

• An unknown population has a mean of 3500 and a standard deviation of 60. If 5,000 units were randomly taken from such a population, what can you say about the shape of the sampling distribution?

a. elliptical b. linear c. bell-like d. parabolic

• What is the mean of the sampling distribution of the sample means if a random sample of size 64 is taken from a population with a mean of 35 and standard deviation of 7?

a. 13 b. 7 c. 5 d. 35