Use the following information to answer the question. The distribution of the number of hours people spend at work per day is unimodal and symmetric with a mean of 8 hours and a standard deviation of 0.5 hours.If Anthony’s z-score for his work hours was -1.3, how many hours did he work?

What is  the symbol for the sample standard deviation?

What does the narrator of “Tell-Tale Heart” do with the old man?

Which of these items plays a crucial part in 1408’s conclusion?

What is the frequency of the first class?

Solve the problem.In the following histogram, what can you conclude about the bin width?

Use the empirical rule to solve the problem.At one college, GPA’s have a distribution that is unimodal and symmetric with a mean of 2.7 and a standard deviation of 0.5. Is a GPA of 3.8 more than one standard deviation above the mean?

A random sample of sale prices of homes yielded the following summary information: MIN= $48,000, Q1= $83,000 Median= $129,000, Q3= $160,000, MAX= $270,000. c) Calculate the Upper Fence

Provide an appropriate response.A television station claims that the amount of advertising per hour of broadcast time has an average of 16 minutes and a standard deviation equal to 2.9 minutes. You watch the station for 1 hour, at a randomly selected time, and carefully observe that the amount of advertising time is equal to 9 minutes. Calculate the z-score for this amount of advertising time.

Solve the problem.In a recent school poll, the administrators asked if students were satisfied with the school’s course offerings. What is the population of interest here?