Cell Phone Call Lengths The average local cell phone call length was reported to be 2.32 minutes. A random sample of 23 phone calls showed an average of 2.86 minutes in length with a standard deviation of 0.94 minute. At a 0.01, can it be concluded that the average differs from the population average? Assume that the population is approximately normally tu (a) State the hypotheses and identify the claim. Ho = 2.32 not claim H₁ 2.32 claim

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.3: Special Probability Density Functions
Problem 40E: Pygmy Height The average height of a member of a certain tribe of pygmies is 3.2ft, with a standard...
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8.3 #4 P Value and Awnser whether to reject null hypothesis or not ?
Cell Phone Call Lengths The average local cell phone call length was reported to be 2.32 minutes. A random sample of 23
phone calls showed an average of 2.86 minutes in length with a standard deviation of 0.94 minute. At a=0.01, can it be
concluded that the average differs from the population average? Assume that the population is approximately normally
#4
(3) State the hypotheses and identify the claim.
Hou= 2.32 not claim
u 2.32 claim
This hypothesis test is a two-tailed
Pvalue=
test.
Reject Null HYP. Or
not?
Transcribed Image Text:Cell Phone Call Lengths The average local cell phone call length was reported to be 2.32 minutes. A random sample of 23 phone calls showed an average of 2.86 minutes in length with a standard deviation of 0.94 minute. At a=0.01, can it be concluded that the average differs from the population average? Assume that the population is approximately normally #4 (3) State the hypotheses and identify the claim. Hou= 2.32 not claim u 2.32 claim This hypothesis test is a two-tailed Pvalue= test. Reject Null HYP. Or not?
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