4. Manhole covers must be a minimum of 22 in. indiameter, but can be as much as 60 in. in diameter.Assume that a manhole is constructed to have acircular opening with a diameter of 22 in. Men haveshoulder widths that are normally distributed with amean of 18.2 in. and a standard deviation of 1.0 in.a) What percentage of men will fit into the manhole?Type your answer...Db) Assume 36 men are selected at random, what is theprobability that their mean shoulder breadth is lessthan 18.5 in.?Type your answer...

Answered: 4. Manhole covers must be a minimum of…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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The mean of 100 observations is 50 and their standard deviation is 5. The sum of all squares of all the observations is? A)250000 B) 50000 C)252500 D)255000
If the standard deviation of the lifetimes of vacuum cleaners is estimated to be 300 hours, how large of a sample must be taken in order to be 97% confident that the margin of error will not exceed 40 hours? Multiple choice use z or t chart if needed. Show all work. a) 245 b) 265 c) 260 d) 280
Two samples are given. Find each sample's a) standard deviation and b) coefficient of variation. Then decide c) which sample has the higher dispersion, and d) which sample has the higher relative dispersion. A: 3, 7, 9, 7, 5 B: 10, 9, 4, 8, 3, 11, 7 D a) What are the sample standard deviations? SA (Do not round until the final answer. Then round to the nearest hundredth as needed.) Sg = (Do not round until the final answer. Then round to the nearest hundredth as needed.)
The annual Commissions Per Sales Person a manufacturer of light employed by Machinery averaged $40000. A Standard deviation of $5000. The percent between $32000 and $42.000 equal to A) 60.0% B) 39.94% c) 34.13 %. 0) 81.66%
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IQ scores are from a Normal distribution with a mean of 100 and a standard deviation of 15. What IQ scores has a z-score of 1.20? Group of answer choices A.) 106 B.) 95 C.) 118 D.) 82
Can you answer c,d, and e please
If a sore of normal distribution is 2.5, mean of distribution is 45 and standard deviation of normal distribution is 3 then the value of x for normal distribution is ________ A.) 7.5 B.) 47.5 C.) 37.5 D.) 67.5
Analyze the following data. Assume the true value of L (the length of a table) is 93.40cm. L(cm) 93.2 93.3 93.9 92.8 93.5 93.4 92.9 a) What are the mean and standard deviation of this data sample? b) What is the uncertainty of the mean? c) Report the measured value of L. d) What is the relative discrepancy between the measured value of L and its true value? Suppose you have a second set of data for the same quantity that gives the following result: L = (93.90 ± 0.02) cm. e) Is this value more or less precise than the first value? f) Is this value more or less accurate than the first value? g) Do the two values agree given their uncertainties? h) What is the relative discrepancy between the two values?
Diastolic blood pressures are assumed to follow a normal distribution with a mean of 85 and a standard deviation of 12. What proportion of people has diastolic blood pressures less than 80? A)0.661 B)0.338 C)0.50 D)0.75
The average teachers salary in a particular state is $54,166.If the standard deviation is $10,200,find the salaries corresponding to the following z scores. a) 2 b) -1 c) 0 d) 2.5 e)-1.6
The IQ of a person follows a normal distribution and has a mean of 100 and a standard deviation of 15. What percentage of the people have IQ scores between 70 and 130? A) 95% B) 50% C) 2.5% D) 68%

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