netflix: a study conducted by the technology ...
netflix: a study conducted by the technology company tivo showed that the mean time spent per day browsing the video streaming service netflix for something to watch was 20.5 minutes. assume the standard deviation is $sigma = 7$. suppose a simple random sample of 104 visits taken this year has a sample mean of $\bar{x}=21.5$ minutes. a social scientist is interested to know whether the mean time browsing netflix has changed. use the $alpha = 0.10$ level of significance and the $p$-value method with the table. part: 0 / 5 part 1 of 5 (a) state the appropriate null and alternate hypotheses. $h_0:$ $h_1:$ this hypothesis test is a (choose one) test.
Answer
# Explanation:
## Step1: Define null hypothesis
The null hypothesis $H_0$ assumes no change. So, $H_0:\mu = 20.5$
## Step2: Define alternative hypothesis
The social - scientist wants to know if the mean has changed (two - tailed test). So, $H_1:\mu\neq20.5$
## Step3: Determine test type
Since we are testing if the mean has changed (not just increased or decreased), this is a two - tailed test.
# Answer:
$H_0:\mu = 20.5$
$H_1:\mu\neq20.5$
This hypothesis test is a two - tailed test.