Question

Probability
your lumber company has bought a machine that automatically cuts lumber the seller of the machine daims that the machine cuts himber to a mean length of 9 fee 108 iinches) with a standard darvialtion of 0.7 inch assume the lengths are normuly distributod you randomly s select 45 boards and find that the mean length is 108 23 inches complete parts (a) theough (c) l click the lcon to view page 1 of the standard normal table ecick the icon to view page 2 of the slandard normal table
a.assuming the sellers claim is correct, what is the probability hat the mean of the sample is 108.23 inches or more? round to four decimal places as needed) (b) u ing your answer from part (a), what do you think of the sellers dains? the sample mean be considered unusual because, i the sellers clains is true, the probability of obtaining the sellers claim appears to be this sample mean is (c) assuming the selles claim is true, would it be unusual to have an ind

Answer 1

The seller of the machine claims that the machine cuts lumber to a mean length of 7 feet ... You randomly select 45 boards and find that the mean length is 84.15 inches.