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8. A researcher claims that the mean time (in hours) teenagers are on the computes is...

8. A researcher claims that the mean time (in hours) teenagers are on the computes is 3.5 hours per day. The mean time of 15 randomly selected teenagers are on the computer in a day was 3.15 hours with a standard deviation of 0.46 hours.

a) Which test will you apply? Why

b) State the Null and Alternative hypothesis.

c) Check the claim. Explain your steps.

math   Statistics-And-Probability   
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Answer #1

AS مز unknown we will use t- test statisties. hypothesis :- Null u = 3.5 Alternate hypothesis ; Hypothesis ; Hoi Hall & 3.5 3df = n-1 17 14 Using t- table Pualue - 0.01076 Decision Ho! - Q = 0,05 (Assume Pualue La we Reject the Null Hypotheses Decisi

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