Suppose the National Transportation Safety Board (NTSB) wants to examine the safety ofcompact cars, midsize cars, and full-size cars. It collects a sample of three for each of thetreatments (cars types). Using the hypothetical data provided below, test whether the meanpressure applied to the driver's head during a crash test is equal for each types of car. Use a = 5%.Midsize carsCompact carsFull-size cars643469484655427702Mean666.67Standard deviation31.18525473.6749.17456402447.3341.68

Given information: Table representing given data: Compact cars Midsize cars full-size cars…

Answered: Suppose the National Transportation…

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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2.112 Nonresponse in a survey of companies. A business school conducted a survey of companies in its state. It mailed a questionnaire to 200 small companies, 200 medium-sized companies, and 200 large companies. The rate of nonresponse is important in deciding how reliable survey results are. Here are the data on response to this survey:
Consider a sample with data values of 29, 27, 22, 17, 32, 38, 30, and 27. Compute the 20th, 25th, 65th, and 75th percentiles. Step 1 Recall that a percentile gives insight to how data are spread between the smallest and largest values. The pth percentile of a set of data indicates that p% of the data are below that value, and (100 − p)% are above that value. There are two components of the pth percentile: the location within the data and the actual value. The formula for finding the location of the percentile, denoted Lp, follows where p is the percentile and n is the number of observations in the ordered data set. Lp = p 100 (n + 1) The first step in calculating a percentile is to order the data in ascending order. The ordered data are below. 17 22 27 27 29 30 32 38 There are n = 8 observations in the data. Find the location of the p = 20th percentile. Lp = p 100 (n + 1) L20 = 20 100 + 1 =
In the class poll from the beginning of the year, you were asked what color car you drive. The results are summarized below. aqua 3 beige/tan/gold 39 black 80 blue 44 green 21 orange 3 pink 1 purple 3 red 45 silver 63 white 74 yellow 1 What is the mode for this data set?
Use the following table to determine whether or not there is a significant difference between the average hourly wages at two manufacturing companies. sample size 81 64 sample mean 15.7 16.5 population sd 3 2
Question 2. Crescent Oil has developed three new blends of gasoline and must decide which blend or blends to produce and distribute. A study of the miles per gallon ratings of the three blends is being conducted to determine if the mean ratings are the same for the three blends. Five automobiles have been tested using each of the three gasoline blends and the miles per gallon ratings; Automobile (Block) 12345 2 4 5 Type of Gasoline (Treatment) Blend X Blend Y Blend Z 31 30 29 33 26 30 29 29 31 25 29.8 30 29 28 Treatment Means a. Compute the analysis of variance for the randomized block design 28.8 29 26 28.4 Block Means 30.333 29.333 28.667 31.000 25.667
A concrete mix is designed to withstand 3000 pounds per square inch (psi) of pressure. The following data represent the strength of nine randomly selected casts (in psi). 3970, 4100, 3100, 3200, 2950, 3820, 4100, 4050, 3470 Compute the mean, median and mode strength of the concrete (in psi).
Listed below are pulse rates (beats per minute) from samples of adult males and females. Find the mean and median for each of the two samples and then compare the two sets of results. Does there appear to be a difference? Male: 95 77 64 88 62 72 53 82 56 79 53 53 54 76 55 Female: 65 63 87 89 84 76 87 68 93 88 69 93 82 87 70 Find the means. The mean for males is beats per minute and the mean for females is beats per minute. (Type integers or decimals rounded to one decimal place as needed.) Find the medians. The median for males is beats per minute and the median for females is beats per minute. (Type integers or decimals rounded to one decimal place as needed.) Compare the results. Choose the correct answer below. O A. The mean and the median for males are both lower than the mean and the median for females. O B. The mean and the median for females are both lower than the mean and the median for males. O C. The mean and median appear to be roughly the same for both genders. O D. The…
I need help with all of them plz.
Listed below are pulse rates (beats per minute) from samples of adult males and females. Find the mean and median for each of the two samples and then compare the two sets of results. Does there appear to be a difference? Male: Female: 92 69 89 55 95 98 67 55 58 61 57 63 56 55 78 61 64 81 86 89 67 85 88 92 74 92 93 79 78 71 Find the means. The mean for males is beats per minute and the mean for females is (Type integers or decimals rounded to one decimal place as needed.) beats per minute.
A concrete mix is designed to withstand 3000 pounds per square inch (psi) of pressure. The following data represent the strength of nine randomly selected casts (in psi). 3970, 4100, 3100, 3200, 2950, 3820, 4100, 4050, 3470 Compute the mean, median and mode strength of the concrete (in psi).
Three sample observations taken for two variables are shown below: X (In $) (In ounces) 2.78 0.60 1.79 1.47 0.80 2.34 When comparing X and Y, which varies the most? What is the value of this statistic (ornitting unit labels such as $, s2, ounces, ounces Ca. Y, 59.1837 Ob. X, 61.7026 CC. Y, 0.8700 Od. None of the answers is correct Ce. X, 0.9801
As part of the National Health Interview Survey, occupational injury data were collected on thousands of American workers. The table summarizes part of the data. Self-employed Employed by others injured 210 4391 Not injured 33724 421502 Total 33934 425893 What’s the relative risk of being injured in self-employed workers versus workers employed by others? Choose from following options. a. 0.2 b. 0.6 c. 0.8

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