Mathematics, 30.07.2019 15:10 aliyahgregory
Hisako sells dolls at her doll store. if she sells a doll for $33, and there is 4% sales tax, what is the total cost of the doll? round your answer to the nearest cent.
Answers: 1
Mathematics, 21.06.2019 20:50, brea2006
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.
Answers: 3
Hisako sells dolls at her doll store. if she sells a doll for $33, and there is 4% sales tax, what i...
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