One question from a survey was "How many credit cards do you currently have?" The results of the survey are provided. Complete parts (a) through (g) below. Click the icon to view the survey results. (a) Determine the mean number of credit cards based on the raw data. The mean is |credit cards. (Type an integer or a decimal. Do not round.) (b) Determine the standard deviation number of credit cards based on the raw data. The standard deviation is credit cards. (Round to three decimal places as needed.) (c) Determine a probability distribution for the random variable, X, the number of credit cards issued to an individual. x (# of cards) P(x) x (# of cards) P(x) 6 - X Credit card survey results UI A W N g 10 (Type integers or decimals. Do not round. (d) Draw a graph of the discrete probability distribution for the rando Graph the distribution. Choose the correct graph below. ANNWENNNON WW- 1 A - N N OO C - W WW WW NAUT - A -NONANW - U W-NOWNON NAANNAVWWU -NO-NONAQ JUN- AA N WWW NOONVONAND O A. O B. OD. 0.4- lity, P(x) lity, P(x) 0.3-(d) Draw a graph of the discrete probability distribution for the random variable X. Describe the shape of the distribution. Graph the distribution. Choose the correct graph below. O A. O B. O C. OD. 0.4- 0.4- 0.4- 0.4- 0.3- 0.3- 0.2- Probability, P(x) 0.2 Probability, P(x) Probability, P(x) 0.2- Probability, P(x) 0.1 0.17 C 0 2 4 6 8 10 0 2 4 6 8 10 0 2 4 6 8 10 # of credit cards, x # of credit cards, x # of credit cards, x # of credit cards, x Describe the shape of the distribution. The distribution and is (e) Determine the mean and standard deviation number of credit cards from the probability distribution found in part (c). The mean is credit cards. (Type an integer or a decimal. Do not round.) The standard deviation is credit cards. (Round to three decimal places as needed.) (f) Determine the probability of randomly selecting an individual whose number of credit cards is more than two standard deviations from the mean. Is this result unusual? The probability is. (Type an integer or a decimal. Do not round.) Time Remaining: 01:38:14 Textbook Statcrunch Next