As part of a study, 800 college football players are randomly chosen and their weights taken. The distribution of the weights isapproximately normal. The average weight is 235 pounds and the standard deviation is 25 pounds.Approximately how many players had weights between 260 pounds and 285 pounds?Select one:a. 432b. 108C. none of thesed. 216400e.

Answered: Image /qna-images/answer/aa72ae97-b5da-44e9-bd74-3f893f007320.jpg

Answered: As part of a study, 800 college…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A statistics professor surveys all 100 of the students in an introductory statistics lecture. The survey asks the students to estimate when they typically wake up on weekdays. The data are recorded in terms of the number of hours after midnight the students wake up. Would it be more appropriate to find a sample standard deviation or population standard deviation in this situation? Select the correct answer below: A. Sample standard deviation B. Population standard deviation
Determine whether the given value is a statistic or a parameter.A health and fitness club surveys 40 randomly selected members and found that the average weight of those questioned is 157 lbs
If the students read only 101 books for the month of June, which measure of central tendency will have the greatest change? A. The median will have the greatest change. B. The mean will have the greatest change. C. All measures will have an equal change. D. The mode will have the greatest change.
Given below are the ages of motorcyclists at the time they were fatally injured in traffic accidents (based on data from the U.S. Department of Transportation). 18 38 23 14 18 34 16 42 28 24 40 20 23 34 37 21 32 25 17 28 33 25 23 19 51 18 29 Looking at the histogram for the data, what is the height (frequency) of the 4th bar on the histogram? Given below are the ages of motorcyclists at the time they were fatally injured in traffic accidents (based on data from the U.S. Department of Transportation). 18 38 23 14 18 34 16 42 28 24 40 20 23 34 37 21 32 25 17 28 33 25 23 19 51 18 29 Looking at the histogram for the data, what is the height (frequency) of the 4th bar on the histogram? 4 7 5 6 8
On a nationwide math test, the mean was 58 and the standard deviation was 4. If Roberto scored 70, what was his z-score? Use the formula Z where is the mean, o is σ the standard deviation, and x is Roberto's score. Round to 4 decimal places. X н =
A student studying statistics wants to look at data for his favorite sport, American football. He collects data on the lengths of 100 field goals from various games over several seasons. Would it be more appropriate to find a sample standard deviation or population standard deviation in this situation? Select the correct answer below: A. Sample standard deviation B. Population standard deviation
An engineer wishes to determine the width of a particular electronic component. If she knows that the standard deviation is 2.3 mm, how many of these components should she consider to be 99% sure of knowing the mean will be within ±0.2±0.2 mm? 23 4642 878 30 716
In the 1992 presidential election, Alaska's 40 election districts averaged 1980 votes per district for President Clinton. The standard deviation was 573. (There are only 40 election districts in Alaska.) The distribution of the votes per district for President Clinton was bell-shaped. Let X = number of votes for President Clinton for an election district. (Source: The World Almanac and Book of Facts) Round all answers except part e. to 4 decimal places.PLEASE ANSWER C, D AND E AND ROUND TO THE 4 DECIMALc. Find the probability that a randomly selected district had fewer than 2062 votes for President Clinton. d. Find the probability that a randomly selected district had between 2052 and 2347 votes for President Clinton. e. Find the first quartile for votes for President Clinton. Round your answer to the nearest whole number.
An engineer wishes to determine the width of a particular Electronic Component. If she knows that the standard deviation is 3.8 mm how many of these components should she consider to be 90% sure that mean will be 0.2 mm
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A nurse at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she desires to be 98% confident that the true mean is within 2 ounces of the sample mean? The population standard deviation of the birth weights is known to be 5 ounces. O A. 6 O B. 33 O C. 34 O D. 5 Click to select your answer. DELL EVD RW Op DELL

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