Find the mean for the given sample data. Unless indicated otherwise, round your answer to one more decimal place than is present in the original data values. Last year, nine employees of an electronics company retired. Their ages at retirement are listed below. Find the mean retirement age. 56, 65, 62, 53, 68, 58, 65, 52, 56 O a. 58.0 yr 0 b. 58.8 yr 0 c. 58.2 yr 0 CI. 59.4 yr Find the number of standard deviations from the mean. Round your answer to two decimal places. Mario's weekly poker winnings have a mean of $344 and a standard deviation of $51. Last week he won $178. How many standard deviations from the mean is that? O a. 3.25 standard deviations above the mean 0 b. 1.63 standard deviations below the mean 0 c. 3.25 standard deviations below the mean 0 d. \"1.63 standard deviations above the mean Find the standard deviation for the given sample data. Round your answer to one more decimal place than is present in the original data. Listed below are the amounts of time (in months) that the employees of a restaurant have been working at the restaurant. 23 617 22 40 54 73101122 0 a. 42.7 months 0 b. 41.5 months 0 c. 43.9 months 0 CI. 40.5 months Formulate the indicated conclusion in nontechnical terms. Be sure to address the original claim. A researcher claims that 62% of voters favor gun control. Assuming that a hypothesis test to reject this claim has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms. O a. There is not sufficient evidence to warrant rejection of the claim that 62% of voters favor gun control. O b. There is not sufficient evidence to support the claim that 62% of voters favor gun control. O c. There is sufficient evidence to support the claim that more than 62% of voters favor gun control. O d. There is sufficient evidence to warrant rejection of the claim that 62% of voters favor gun control.Identify which of these types of sampling is used: random, stratied, systematic, cluster, convenience. A tax auditor selects every 1000th income tax return that is received. 0 a. Systematic O b. Convenience O c. Random 0 d. Stratied 0 e. Cluster