Question

Show brief calculation for #13

Page S of 8 At one point the average price of regular unleaded gasoline was $3.51 per gallon. Assume that the standard deviation price per gallon is $0.07 per galon and use Chebyshev's inequality to answer the following a) What percentage of gasoline stations had prices within 4 standard deviations of the mean? (b) What percentage of gasoline stations had prices within 1.5 standard deviations of the mean? What are the gasoline prices that are within 1.5 standard deviations of the mean? (c) What is the minimum percentage of gasoline stations that had prices between $3.37 and $3.657 (a) At least Round to two decimal places as needed.) % of gasoline stations had prices within 4 standard deviations of the mean. (b) At least (Round to two decimal places as needed.) % of gasoline stations had prices within 1.5 standard deviations of the mean. The gasoline prices that are within 1.5 standard deviations of the mean are $ (Use ascending order.) to $ % is the minimum percentage of gasoline stations that had prices between $3.37 and $3.65. Round to two decimal places as needed.) 12. The accompanying frequency distribution represents the square footage of a random sample of 500 houses that are owner occupied year round. Approximate the mean and standard deviation square footage 1 Click the icon to view the data table The mean square footage is x (Round to the nearest integer as needed.) The standard deviation square footago iss (Round to one decimal place as neoded.) 1: Housing Data Square footage Frequency 0-4991 500-9991, 1,000-1,499 1,500-1,999 2,000-2.499 2,500-2,999 3,000-3,499 3,500-3,999 4,000-4,499 4,500-4,999 13 36 121 119 81 47 45 13. In Marissa's calculus course, attendance counts for 10% of the grade, quizzes count for 10% of the grade, exams count for 55% of the gade and the final exam counts for25% of the grade. Marissa had a 100% average for attendance, 93% for quizzes, 86% for exams, and 81% on the fnal. Determine Marissa's course average. Marissa's course average is %, (Type an integer or a decimal. Do not round.)

Answer 1

Q. 13)