Is the amount of sleep that Americans get more than 8 hours…
Is the amount of sleep that Americans get more than 8 hours per day? In 2013, the Bureau of Labor Statistics, conducted a survey. They asked the participants to make a diary of what they did during a 24 hours period. The sample size was 150. The sample mean amount of sleep was 8.74 hours and the sample standard deviation was 2.4. What is the test statistic?