mber of calls made per day today is higher. He selects a random sample of 33 individuals who use a cell phone and asks them to keep track of the number of calls that they made on a certain day. The mean was 3.1. At =α0.10, is there enough evidence to support the researcher's claim? The standard deviation for the population found by a pr
Telephone Calls A researcher knew that before cell phones, a person made on average 2.8 calls per day. He believes that the number of calls made per day today is higher. He selects a random sample of 33 individuals who use a cell phone and asks them to keep track of the number of calls that they made on a certain day. The mean was 3.1. At =α0.10, is there enough evidence to support the researcher's claim? The standard deviation for the population found by a previous study is 0.9. Assume that the variable is
State the hypotheses and identify the claim with the correct hypothesis.
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:H0 ▼(Choose one)
:H1 ▼(Choose one)
This hypothesis test is a ▼(Choose one) test. |
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