Mathematics, 27.11.2019 01:31 10040813

An important problem in industry is shipment damage. a windshield factory ships its product by truck and determines that it cannot meet its profit expectations if, on average, the number of damaged items per truckload is greater than 12. a random sample of 12 departing truckloads is selected at the delivery point and the average number of damaged items per truckload is calculated to be 9.4 with a calculated sample of variance of 0.64. select a 99% confidence interval for the true mean of damaged items
a) [8.682, 10.12]
b) [39.48. -25.66]
c [11.28, 12.72]
d l-0.7181.0.7181
e) [8.707, 10.09
f) none of the above

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An important problem in industry is shipment damage. a windshield factory ships its product by truck...