Question: View question in a popup | 2h 28m Remaining Exercise 9 (p-value, table) Telephone Calls A researcher knew that before cell phones, a person made

 View question in a popup | 2h 28m Remaining Exercise 9

View question in a popup | 2h 28m Remaining Exercise 9 (p-value, table) Telephone Calls A researcher knew that before cell phones, a person made on average 2.7 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. At a = 0.1, is there enough evidence to support the researcher's claim? The standard deviation for the population found by a previous study is 0.8. Assume that the variable is normally distributed. Use the P-value method with tables. Part: 0 / 5 Part 1 of 5 State the hypotheses and identify the claim. Ho : not claim 0 0=0 H : claim 0#0 H The hypothesis test is a two-tailed V test. X Part: 1 / 5 Part 2 of 5 Compute the test value. Always round z score values to at least two decimal places. Z =

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