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(1 point) A certain airline wishes to estimate the mean number of seats that are empty on flights that use 737-airplanes. There are 189 seats on a 737. To do so, the airline randomly picks n = 33 flights. For each flight, the number of empty seats is counted. The data are given below. 42, 37, 38, 33, 33, 35, 47, 42, 32, 40, 47, 36, 47, 41, 41, 35, 31, 38, 34, 42, 35, 33, 41, 38, 32, 45, 44, 44, 43, 43, 35, 41, 45 X S= 39.0909 ⠀ (a) Find the mean and the standard deviation of this sample. Use at least three decimal places in each answer. empty seats Data from the sample, are saved in the Download .csv file. Distribution of Empty Seats empty seats Kouenbe 30 35 40 Number of Unoccupied Seats 45 (b) To construct a confidence interval for the mean number using the T distribution for unoccupied seats on all flights that use 737s, what condition must you hold? OA. That the number of unoccupied seats are normally distributed. OB. The number of unoccupied seats can be modeled by the Binomial distribution. OC. The number of unoccupied seats are not normally distributed. recocasect of (1 point) A certain airline wishes to estimate the mean number of seats that are empty on flights that use 737-airplanes. There are 189 seats on a 737. To do so, the airline randomly picks n = 33 flights. For each flight, the number of empty seats is counted. The data are given below. 42, 37, 38, 33, 33, 35, 47, 42, 32, 40, 47, 36, 47, 41, 41, 35, 31, 38, 34, 42, 35, 33, 41, 38, 32, 45, 44, 44, 43, 43, 35, 41, 45 X S= 39.0909 ⠀ (a) Find the mean and the standard deviation of this sample. Use at least three decimal places in each answer. empty seats Data from the sample, are saved in the Download .csv file. Distribution of Empty Seats empty seats Kouenbe 30 35 40 Number of Unoccupied Seats 45 (b) To construct a confidence interval for the mean number using the T distribution for unoccupied seats on all flights that use 737s, what condition must you hold? OA. That the number of unoccupied seats are normally distributed. OB. The number of unoccupied seats can be modeled by the Binomial distribution. OC. The number of unoccupied seats are not normally distributed. recocasect of

Answer rating: 100% (QA)

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