The mean finish time for a yearly amateur auto race was 185.92 minutes with a standard deviation of 0.387 minute. The winning car, driven byChris, finished in 184.81 minutes. The previous year's race had a mean finishing time of 112.2 with a standard deviation of 0.119 minute. Thewinning car that year, driven by Betty, finished in 111.83 minutes. Find their respective z-scores. Who had the more convincing victory?

From the given information we find the z score and compare.

Answered: he mean finish time for a yearly…

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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Grace has a dog and its weight is z = -0.5lbs. Her current weight is 47 lbs. The average weight for medium-sized dogs is 50 lbs. What is the standard deviation for a dog of her size?
Two 2017 high school graduates want to compare their results on college entrance exams. Alex scored 1401 on the SAT, and Olivia scored 32 on the ACT. For 2017, the mean SAT score was 1060, and the standard deviation was 195. That same year, the ACT had a mean score of 21.0 and a standard deviation of 5.6. Calculate a z-score for each student, determine which student had the better test score, and explain why.
The average life of a car tire is 50,000 miles. The standard deviation is 2,000 miles What percent of the tires will last longer than 52,000 miles? If a tire store purchased 400 tires, how many tires would you expect to last longer than 54,000 miles?
The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances that someone is earning more than $20 an hour?
Mark went around the neighborhood collecting spare change for charity. The 7 families gave: $5.00 , $4.00 ,$4.00 , ,$6.00, $6.00, $5.00, $5.00 . What was the mean absolute deviation of the amounts of change given?
The local pilots association examined records from this year's census of its members. Tom is a member, and the census shows that he has 4210 hours of flight experience. The census also shows that among all members of the association the mean flight experience is 3095 hours with a standard deviation of 679 hours. Find the z-score of Tom's flight experience relative to the flight experiences of all the members of the pilots association. Round your answer to two decimal places.
solve for the dignital measured length and number 2.
Refer to the accompanying table, which describes the number of adults in groups of five who reported sleepwalking. Find the mean and standard deviation for the numbers of sleepwalkers in groups of five. Click the icon to view the data table. The mean is sleepwalker(s). (Round to one decimal place as needed,) The standard deviation is sleepwalker(s). (Round to one decimal place as needed.) Enter your answer in each of the answer boxes.
the mean (and standard deviation) snowfalss for two cities are noted below. Ottawa : Mean=98 inches per year, s=25 inches Bostone: mean= 44 inches per year, s=17 inches In 2018, ottawa recieve 119 inches of snowfall, while boston recored 62 inches. What city had a worse winter in 2018 relative to its average?
According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the standard deviation is 3 inches. If Zsike is 67 inches tall, what is her z-score?
Carla scored a 31 on her ACT and an 750 on her SAT. If the mean and standard deviation for the ACT are 18 and 7, respectively; and the mean and standard deviation of the SAT are 500 and 150, respectively - what is her percentile rank on each exam? Percentile rank of ACT Percentile rank of SAT On which exam did she do better?
Refer to the accompanying table, which describes the number of adults in groups of five who reported sleepwalking. Find the mean and standard deviation for the numbers of sleepwalkers in groups of five. E Click the icon to view the data table, The mean is sleepwalker(s). (Round to one decimal place as needed.) The standard deviation is sleepwalker(s). (Round to one decimal place as needed.) Table of numbers of sleepwalkers and probabilities P(x) 0.183 0.368 0.305 3 0.115 4. 0.025 0.004 Print Done Enter your answer in each of the answer boxes. a Speech Present.pptx 2 pecha kucha pr.pptx O Team Pecha Ku.docx ch4Bprac.pdf The Canaries pptx Show All MacBook Air 吕0 F3 esc F8 F9 F10 F1 F2 F5 F6 F7 @ #3 2$ & 3 7 8 Q W E Y U P T

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