An automobile manufacturer introduces a new model that averages 26 miles pergallon in the city. A person who plans to purchase one of these new cars wrote themanufacturer for the details of the tests, and found out that the standard deviation is2 miles per gallon. Assume that in-city mileage is approximately normally distributed.For each of the questions below make sure to show your work. Round any z-scorecalculated to two decimal places to find your result.1. What percent of these vehicles have a fuel consumption of 22 to 30 miles pergallon?2. The manufacturer wants to know what percent of vehicles have a fuelconsumption less than 23 miles per gallon.3. Find the fuel consumption for the 90th percentile. Round to one decimalplace.

Given: μ = 26 σ = 2 Formula Used: Z-score = X-μσ X = μ+Zσ

Answered: An automobile manufacturer introduces a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The following frequency histogram represents the IQ scores of a random sample of seventh-grade students. IQs are measured to the nearest whole number. The frequency of each class is labeled above each rectangle. Use the histogram to answers parts (a) through (g). 1 OA. 150-160 B. 155 OC. 60-69 OD. 150-159 M (f) What percent of students had an IQ of at least 120? % (Type an integer or a decimal. Do not round.) (g) Did any students have an IQ of 164? OA. Yes, because there is a frequency of a score of 165. OB. Yes, because there is a bar in the 150-159 class. C. No, because there is a bar in the 150-159 class. OD. No, because there are no bars, or frequencies, greater than an IQ of 160. Frequency 80- 60- 40- 20- IQs of 7th Grade Students 12 44 57 43 29 7 2 3 2 + 60 70 80 90 100 110 120 130 140 150 160
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The blood pressure in millimeters was measured for a large sample of people. The average pressure is 140 mm, and the SD of the measurements is 20 mm. The histogram looks reasonably like a normal curv Use the normal curve to estimate the following percentages. Choose the answer that is closest to being correct. A 19.1% B 30.9% C 38.2% D 69.1% E 68.27% A The percentage of people with blood pressure between 130 and 150 mm. B The percentage of people with blood pressure between 140 and 150 mm. D The percentage of people with blood pressure over 150 mm.
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