Three distributions, labeled (a), (b), and (c) are represented below by their histograms. Each distribution is symmetrical and is m Without performing any calculations, order their respective standard deviations o, o, and o. (a) (b) 123 4 5 6 7 10 11 12 13 14 7 8 9 10 11 12 13 14 (c) 田田 1 4 5 6 7 8 10 11 12 13 14 O., 0. , D.

Name C: Compute the mean & the standard deviation of the following slightly larger data set (again, with no rounding): (X₁-Xbar) (x₁ - Xbar)² i 1 2 3 4 5 7.2 7.1 7.1 6 7.2 7 7.1 8 7.2 9 7.1 10 7.2 11 7.2 12 7.2 Σ(x₁) = 861 N = Xbar = 775 error = X₁ 7.2 7.3 diff diff = Tex 6. Bood 16,00 44 forgova Nove 6103 or $3 Σ(x₁ - Xbar)² = N - 1 = σA = Percent Error & Percent Difference: Use your values from the C data set in part IV & a value for Xknown = 7.21 to compute the error, relative error, & %E. Write down your symbolic formulas in the space below each answer. Include +/- signs. D forory?" rel. GA=6,087 % rel. σA=FU 70 rel. error = on God A rel. error = rel. diff 404 0,06 rel. diff= x lab I fuc error = ₁x fre = 7.1 & X₂ 7.3, to compute the diff, rel. diff, & %D. Use two experimental values, Write down your symbolic formulas in the space below each answer. ylab-x the %E= = %E= %D= %D=

Are the snow conditions a factor in the number of visitors at a ski resort? The table below shows data that was collected. Hard Packed Machine Made Powder 2457 1401 1708 1484 1895 2193 2334 1849 2803 1816 1870 1842 1792 1873 2969 2219 989 1791 1504 1917 2143 1265 1881 1545 2341 1531 Assume that all distributions are normal, the three population standard deviations are all the same, and the data was collected independently and randomly. Use a level of significance of a = 0.05. Ho: µi = µ2 = µ3 H1: At least two of the means differ from each other. 1. For this study, we should use Select an answer v 2. The test-statistic for this data = (Please show your answer to 3 decimal places.) 3. The p-value for this sample = (Please show your answer to 4 decimal places.) 4. The p-value is Select an answer 5. Base on this, we should Select an answer v hypothesis 6. As such, the final conclusion is that... O There is insufficient evidence to support the claim that snow conditions is a factor in the…

The following table shows the distribution of scores on a final elementary statistics examination for a large section of students. 0.12 The cumulative relative frequency for the class 60-70 (i.e. what percentage of students scored 70 or lower) is 0.06 0.57 Classes for Exam Scores 90 and over 80-90 70 - 80 60-70 50 - 60 40 - 50 Under 40 0.43 Number of Students 5 12 40 18 13 6 6

The following table gives the math SAT scores for some recent selected years. Find the average, variance, and standard deviation of each. (Round your answers to four decimal places.) Males 500 502 498 504 497   Females 446 453 450 454 451   Males: mean     variance     standard deviation     Females: mean     variance     standard deviation     Which group is varying more? femalesmales    cannot be determined