8.
A random sample of 15 college students were asked "How many hours per week typically do you work outside the home?" Their responses are shown on the right.Determine the shape of the distribution of hours worked by drawing a frequency histogram and computing the mean and median. Which measure of central tendency better describes hoursworked?133131291717201918232620629Choose the correct frequency histogram below.A.0102030024hoursFrequencyB.0102030024hoursFrequencyC.0102030024hoursFrequencyD.0102030024hoursFrequency
Is the histogram for the data set skewed right, skewed left, or symmetric?
Skewed leftSkewed rightRoughly symmetric and bell-shapedRoughly symmetric but not bell-shaped
The mean number of hours worked by college students outside the home is approximately hours.17.533(Type an integer or decimal rounded to three decimal places as needed.)
18Which measure of central tendency better describes hours worked?
Compute the range and sample standard deviation for strength of the concrete (in psi).
spsi (Round to one decimal place as needed.)=472.6Hours Workedper WeekHours Workedper WeekHours Worked
per Week
Hours Worked
per Week

1/15/19, 10(03 AM1-3 MyStatLab: Module One Problem Set-Ricqui HollyPage 8 of 11
9.Which histogram depicts a higher standard deviation?0246810Frequency4044485256600246810Frequency3040506070(a)(b)Choose the correct answer below.
A.Histogram depicts the higher standarddeviation, since it is more bell shaped.bB.Histogram depicts the higher standarddeviation, because the bars are higher than the average bar in .abC.Histogram depicts the higher standarddeviation, because the distribution has more dispersion.bD.Histogram depicts the higher standarddeviation, because the distribution has more dispersion.a

1/15/19, 10(03 AM1-3 MyStatLab: Module One Problem Set-Ricqui HollyPage 9 of 11
10.The following data represent the weights (in grams) of a random sample of 50 candies.0.870.880.830.860.860.870.960.890.920.930.810.890.770.840.920.810.720.840.760.820.950.790.790.930.830.930.870.850.840.750.990.840.790.750.820.790.830.870.860.750.740.920.740.730.810.830.880.920.930.84(a)Determine the sample standard deviation weight. sgram=0.07(Round to two decimal places as needed.)(b)On the basis of the histogram on the right, comment on the appropriateness of using the empirical rule to make any general statements about the weights of the candies.