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lora16 [44]
3 years ago
8

An important problem in industry is shipment damage. A electronics distribution company ships its product by truck and determine

s 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) [48.26, -30.02]
b) [10.67, 11.93]
c) [-0.6285, 0.6285]
d) [10.69, 11.91]
e) [11.37, 12.63]
f) none of the above
Mathematics
1 answer:
pav-90 [236]3 years ago
6 0

Answer:

the answer is b) (10.67,11.93)

Step-by-step explanation:

hope this helps

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