5 & 6 pls. will thumb up!

5. A survey of a 10 families in the United States shows the amount they spent on grocery shopping during the past week as follows: $10, $126, $103, $93, $99, $113, $87, $101, $109, $100 a. Compute the mean (show the step-by-step calculations). b. Compute the variance (show the step-by-step calculations). c. Compute the standard deviation (show the step-by-step calculations). d. Are a, b, and can estimate or the exact value for the arithmetic mean, variance, and standard deviation of what all the families in the United States spent on grocery shopping during the past week? Why? 6. Assume the likelihood that any chemical experiment is successfully performed is 0.87. We randomly selected three chemical experiments in three different labs. a. What is the probability that all three of the experiments are successfully performed? b. What is the likelihood that none of the selected experiments are successfully performed? c. What is the likelihood that at least one of the selected experiments is successfully performed