Working with the Concepts 51. Netflix: A study conducted in 2015 by the technology company Rovi (now TiVo) showed that the mean time spent per day browsing the video streaming service Netflix for something to watch was 19.3 minutes. Assume the standard deviation is o = 8. Suppose a simple random sample of 100 visits taken this year has a sample mean of i = 21.5 minutes. A social scientist is interested to know whether the mean time browsing Netflix has increased. a. State the appropriate null and alternate hypotheses. b. Compute the value of the test statistic. c. State a conclusion. Use the a = 0.05 level of significance.

Question
Working with the Concepts
51. Netflix: A study conducted in 2015 by the technology company
Rovi (now TiVo) showed that the mean time spent per day
browsing the video streaming service Netflix for something to
watch was 19.3 minutes. Assume the standard deviation is
o = 8. Suppose a simple random sample of 100 visits taken this
year has a sample mean of i = 21.5 minutes. A social scientist
is interested to know whether the mean time browsing Netflix
has increased.
a. State the appropriate null and alternate
hypotheses.
b. Compute the value of the test statistic.
c. State a conclusion. Use the a = 0.05 level of significance.
Expand
Transcribed Image Text

Working with the Concepts 51. Netflix: A study conducted in 2015 by the technology company Rovi (now TiVo) showed that the mean time spent per day browsing the video streaming service Netflix for something to watch was 19.3 minutes. Assume the standard deviation is o = 8. Suppose a simple random sample of 100 visits taken this year has a sample mean of i = 21.5 minutes. A social scientist is interested to know whether the mean time browsing Netflix has increased. a. State the appropriate null and alternate hypotheses. b. Compute the value of the test statistic. c. State a conclusion. Use the a = 0.05 level of significance.

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