Submit tes A boat cover manufacturer collected data on number of months their top-selling boat cover was used until it became unserviceable. Complete parts a through c below. Click the icon to view the data. 18 19 20 21 22 23 (Type integers or decimals.) b. Calculate the expected value (mean) and standard deviation for the discrete probability distribution of the number of months until the covers became unserviceable. E(x) = (Round to two decimal places as needed.) x = (Round to three decimal places as needed.) Ox c. The quality-control department thinks that among those covers, the majority last at least 19 months. Produce the relevant statistic to verify this assumption. For the majority of the covers to last at least 19 months, would have to be at least 0.5. Here, and the quality-control department is correct. Nex K A boat cover manufacturer collected data on number of months their top-selling boat cover was used until it became unserviceable. Complete parts a through c below. Click the icon to view the data. IT 18 19 20 21 22 23 (Type integers or decimals.) b. Calculate the expected value (mean) and standard devia P(x 19) probability distribution of the number of months until the covers became unserviceable. E(x) = (Round to two decimal places as needed.) P(X 19) x = (Round to three decimal places as needed.) the mean c. The quality-control department thinks that among those last at least 19 months. Produce the relevant statistic to verify this assumption. For the majority of the covers to last at least 19 months, would have to be at least 0.5. Here, and the quality-control department is correct. MI Next Apr 17 1:28 1 INTL D K Submit test point(s) possible A boat cover manufacturer collected data on number of months their top-selling boat cover was used until it became unserviceable. Complete parts a through c below. Click the icon to view the data. 5 18 19 20 21 22 23 b. Calculate the expected value (mean) and standard deviation for the discrete probability distribution of the P(x 19) ntil the covers became unserviceable. E(x)= (Round to two decimal places as needed.) P(x 19) 0x = (Round to three decimal places as needed.) mode c. The quality-control department thinks that among those covers, the majority last at least 19 months. Pro tistic to verify this assumption. For the majority of the covers to last at least 19 months, would have to be at least 0.5. Here. and the quality-control department is correct. (Type integers or decimals.) E Next ?testId=248699454¢erwin=yes 2023 Click the icon to view the data. duce a fred Data table uct a frequ le Values 14 15 16 17 18 19 20 21 22 23 16 20 che frequ 19 17 19 12928272922 192 16 20 16 20 19 2 2 2 2 2 2 2 2 2 2 2 2 9 9 9 19 22 Number of Months 20 20 19 20 22 20 19 20 19 2 2 2 2 9 2 2 95 & 2 17 21 18 21 20 20 19 16 16 21 23 21 15 19 20 17 18 20 21 19 22 22 18 16 19 19 20 19 20 21 21 18 18 19 9924822 9 9 2 29 20 19 20 21 18 21 2222222222 2 2 2 2 2 19 Print Done 816 - x a. Produce a fred Construct a frequ Possible Values To view the data. Data table - X ution using the relative frequ 14 18 15 16 17 18 19 20 21 22 16 23 21 21 Convert the frequ 19 16 20 20 98 299929229982 20 21 17 21 16 18 18 17 19 19 19 17 19 17 19 2289 2292 99 9 9 5 95 9 20 16 16 22 21 23 19 20 21 15 20 19 19 20 19 19 18 16 20 21 9 & 299 & 299922 19 20 21 17 18 18 20 18 19 21 19 22 18 16 19 20 21 20 21 18 19 15 16 16 15 21 19 16 298 2 2 2 2 2 2 2 2 8 229 21 19 babilities). 20 20 20 16 Print Done