The table shows the number of pages Peter read in different numbers of minutes. 2
10 18 26
Minutes
Number of
Pages Read
6 30 54 78
Based on the information in the table, how long will it take Peter to read 42 pages?
A. 14 minutes
B. 32 minutes
O
C. 102 minutes
O
D. 126 minutes

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.