Mathematics, 08.11.2019 07:31 caro11377oxq5d0
Fowle marketing research, inc., bases charges to a client on the assumption that telephone surveys can be completed in a mean time of 15 minutes or less. if a longer mean survey time is necessary, a premium rate is charged. suppose a sample of 35 surveys shows a sample mean of 17 minutes. use = 4 minutes. is the premium rate justified? click on the datafile logo to reference the data.
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