Question
In: Statistics and Probability
17. Number of times the average person taps, types, swipes, or clicks on a smartphone each...
17. Number of times the average person taps, types, swipes, or clicks on a smartphone each day is 2,617. A random sample of 352 person showed an average time of 2,500, with a standard deviation of 300. (source: https://harpers.org/harpers-index/?issue_month=07&issue_year=2020) Using this information:
a) Can we conclude that the average times a person taps, types, swipes, or clicks on a smartphone each is less than 2,617? Use the .01 level of significance.
b) Calculate the P-value for this test. Would your answer have changed if you had used a .05 level of significance?
(Use formulas and show work)
Solutions
Expert Solution
There is sufficient evidence to conclude that the average times a person taps, types, swipes, or clicks on a smartphone each is less than 2,617.
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