6 A researcher polled a sample of 1092 adults in the year 2010 asking them how many hours per week they spent on the Internet

Question

6 A researcher polled a sample of 1092 adults in the year 2010 asking them how many hours per week they spent on the Internet The sample mean was 9 39 with a standard deviation of 13 30 A second sample of 1040 adults was taken in the year 2012 For this sample the mean was 10 55 with a standard deviation of 14 56 Assume these are simple random samples from populations of adults Can you conclude that the mear number of hours per week spent on the Internet increased between 2010 and 2012 Let 1 denote the mean number of hours spent on the Internet in 2010 and 2 denote the mean number of hours spent on the Internet in 2012 Use the a 0 10 level and P value method with TI 84 calculator State the appropriate null and alternate hypotheses b This is a Left tailed Two tailed Right tailed test Circle the correct answer c Compute the P value Round the answer to four decimal places d Decision Determine whether to reject Ho e State your conclusion

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