Please help me with all parts. Thank you so much!

Q 1.

Insurance companies are interested in the mean health costs each year of their clients, so that they can determine the costs of health insurance. Define the following in terms of the study. Give examples where appropriate. - Part (a) The population 0 The population is all of the insurance companies. 0 The population is a random selection of all of the clients of the insurance companies. 0 The population is a random selection of the insurance companies. 0 The population is all of the clients of the insurance companies. - Part (b) The sample 0 The sample is all of the health costs of the clients. 0 The sample is all of the clients. 0 The sample is a group of the health costs of the clients. 0 The sample is a group of the clients. - Part (0) The parameter 0 The parameter is the health insurance costs of all of the clients. 0 The parameter is the mean costs of the clients' health insurance. 0 The parameter is the health costs of all of the clients. 0 The parameter is the mean health costs of the clients. The statistic O The statistic is the mean health costs of all of the clients. 0 The statistic is the mean health costs of the sample. 0 The statistic is the number of insurance companies. 0 The statistic is the number of clients. The variable 0 The variable is the mean health costs of the sample. 0 The variable is the health costs of one client. 0 The variable is the health costs of the sample. 0 The variable is the mean health cost of one client. The data 0 Examples: doctor visits, lab tests, hospitalizations 0 Examples: 71 clients, 86 clients, 115 clients 0 Examples: $34, $82, $137 0 Examples: 2 insurance companies, 4 insurance companies, 5 insurance companies A magazine published data on the best small firms in a certain year. These were rms which had been publicly traded for at least a year, have a stock price of at least $5 per share, and have reported annual revenue between $5 million and $1 billion. The table below shows the ages of the chief executive officers for the first 58 ranked firms. Age Frequency Relative Frequency grefi'f Relative 40-44 5 45-49 1 1 50-54 1 3 55-59 1 6 60-64 10 65-69 2 70-74 (a) What is the frequency for CEO ages between (but not including) 54 and 65? (Enter your answer as a whole number.) (b) What percentage of CEOs are 65 years or older? (Round your answer to the nearest whole number.) 0/0 (c) What is the relative frequency of ages under 50? (Round your answer to two decimal places.) (d) What is the cumulative relative frequency for CEOs younger than 55? (Round your answer to two decimal places.) (e) Which graph shows the relative frequency? Relative Relative Frequency Frequency Which graph shows the cumulative relative frequency? Relative Relative Frequency Frequency