In Research on Cell Phone Use by Teenagers,it Was Found

question 11

Essay

In research on cell phone use by teenagers,it was found that the average connect time for a call was at least 15 minutes.Social psychologists feel that this study understated the time.To determine this claim,cell phone bills for 15 teenagers were evaluated.On average,the time spent was 18.5 minutes,with a sample standard deviation of four minutes.(Assume a normal distribution. )What is the critical value for α = .001 to test the hypotheses.Determine whether the null hypothesis can be rejected at this level.

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Definitions:

Motives

The reasons or drives behind an individual's actions or behavior.

Deficiencies

Refers to the lack or shortage of something essential, including nutrients, resources, or qualities necessary for normal functioning and health.

Ideals

Principles or values that are actively pursued as goals or standards of perfection.

Interests

Refers to activities, topics, or subjects that an individual finds engaging or enjoys exploring.