The distribution of grades in an introductory finance class is normally distributed, with an expected grade of 67. If the standard deviation of grades is 8, in what range would you expect 95.00 percent of the grades to fall? (Round answers to 2 decimal places, e.g. 15.25. Hint: Think in terms of what the expected highest and lowest scores would be for 95.00% of the students taking the exam.)

The sample mean amount of savings is $

QUEST A set of final examination grades in a calculus course was found to be normally distributed with a mean of 69 and a standard deviation of 9. The top 15% of the students taking the test scored will receive a grade of B. What is the cur score?

Use the magnitudes (Richter scale) of the 120 earthquakes listed in the accompanying data table. Use technology to find the range, variance, and standard deviation. If another value, 8.00, is added to those listed in the data set, do the measures of variation change much? Click the icon to view the table of magnitudes. Magnitudes Without the extra data value, the range is (Type an integer or decimal rounded to three decimal places as needed.) 3.28 2.82 2.83 1.96 1.70 2.55 O 2.45 3.40 3.95 1.59 2.91 1.63 2.53 2.42 2.97 2.93 3.99 2.54 2.43 1.83 2.17 2.35 2.00 3.01 2.80 3.86 2.93 2.08 1.86 2.35 2.38 3.45 3.43 1.55 2.54 1.49 2.19 3.09 2.28 3.25 1.98 1.91 2.42 2.95 2.14 2.33 2.56 2.89 1.48 1.91 2.68 1.81 3.65 2.70 1.45 3.61 3.14 2.57 1.51 1.41 2.83 2.87 2.18 1.67 3.21 1.39 1.75 2.35 1.14 2.36 2.48 1.79 2.00 3.03 1.94 2.42 1.86 2.25 2.33 3.17 4.01 2.08 1.49 2.31 2.33 2.56 2.59 2.21 2.75 2.45 2.73 3.58 2.81 2.80 3.25 1.76 4.68 3.23 2.38 2.00 3.83 2.39 2.85 3.38 2.69 2.31 2.83 2.78 2.43 2.34…