This Question: 1 pt 11 of 15 (0 complete) This Quiz: 15 p State the conclusion b

Question

This Question: 1 pt 11 of 15 (0 complete) This Quiz: 15 p State the conclusion based on the results ofl the est According to the report, the standard deviation of monthly cell phone bills was $48 4 three years ago A researcher suspects that the standard deviation of monthly cell phone bills is less today The nudl hypothesis is rejected Choose the correct answer below O A. There is sufficient evidence to conclude that the standard deviation of monthly cell phone bills is less than its level three years ago of $48.84 O C. There is suficient evidenos to conclude that the standard deviation of monthly cell phone bils is dferent from its velree years ago of $48.4

Explanation / Answer

Here, we canstate hyothesis as follow:

H0 : the SD of monthly telephone bills today is same as it wasthree years ago.

H1: the SD of the monthly telephone bills today is less than it was three years ago.

given information is we reject the null hypothesis.

Hence we can conclude that the SD of the monthly telephone bills today is less than it was three years ago

i.e there is sufficient evidence to conclude that the SD of monthly telephone bill is less than its level three years ago of $48.84.

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