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elephone Calls A researcher knew that before cell phones, a ade on average 2.5 calls per day. He believes that the number ade per day today is higher. He selects a random sample of 34 no use a cell phone and asks them to keep track of the numbe at they made on a certain day. The mean was 2.6. At a=0.01, is t vidence to support the researcher's claim? The standard deviat pulation found by a previous study is 0.6. Assume that the vari

elephone Calls A researcher knew that before cell phones, a ade on average 2.5 calls per day. He believes that the number ade per day today is higher. He selects a random sample of 34 no use a cell phone and asks them to keep track of the numbe at they made on a certain day. The mean was 2.6. At a=0.01, is t vidence to support the researcher's claim? The standard deviat pulation found by a previous study is 0.6. Assume that the vari

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Telephone Calls A researcher knew that before cell phones, a person made on average 2.5 calls per day. He believes that the number of calls made per day today is higher. He selects a random sample of 34 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 2.6. At a=0.01, is there enough evidence to support the researcher's claim? The standard deviation for the population found by a previous study is 0.6. Assume that the variable is normally distributed. Use the critical value method with tables.
Transcribed Image Text:Telephone Calls A researcher knew that before cell phones, a person made on average 2.5 calls per day. He believes that the number of calls made per day today is higher. He selects a random sample of 34 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 2.6. At a=0.01, is there enough evidence to support the researcher's claim? The standard deviation for the population found by a previous study is 0.6. Assume that the variable is normally distributed. Use the critical value method with tables.
State the hypotheses and identify the claim with the correct hypothesis. Ho: (Choose one) ▼ H₁: (Choose one) This hypothesis test is a (Choose one) ▼ test.
Transcribed Image Text:State the hypotheses and identify the claim with the correct hypothesis. Ho: (Choose one) ▼ H₁: (Choose one) This hypothesis test is a (Choose one) ▼ test.
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