4.A study of working couples measures the income X of the husband and the income Y of the wife in alarge number of couples in which both partners are employed. Suppose that you knew the mean Hxand the variances af and a? of both variables in the populationandНyIs it reasonable to take the mean of the total income X + Yto be ux + ply? Explain your answer.а.Is it reasonable to take the variance of the total income to be af + af? Explain your answerb.

Here, X denotes the income of the husband and Y denotes the income of the wife. In this context, it…

Answered: 4. A study of working couples measures…

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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1. From the community hospital and clinics around a city , the ages of dentists , nurses and physicians are recorded as shown below . At a = 0.05 , test if the variances are equal. You may assume that the distribution of the ages is normal. (Given that F28 = 4.46) Ages Dentists 29 57 62 44 Nurses 44 23 27 Physicians 39 47 41 58
What is the difference between Micro and M? a. Micro (u) is the variance and M is the mean b. Micro (u) i sthe median and M is the mean c.Micro (u) is the mean of the sample and M is the mean of the population d. Micro (u) is the mean of the population and M is the mean of the sample
1. Identify a1 of this data: 1, 2, 3, 4,4, 5 ,6, 6 ,7,8,9, 1o. A. 3 C. 4 B. 3.25 D. 4. 25 9. Vhat is the mean of this data? 3x10, 4x105 , 5x1of GXI05, 7x105. A. 3,5 X10 C 6.5 X105 B. 4x105 D. 7 X105 10. f x is the qverage of 2 & 3, y is the average of x *2, z is the qverage of x 95, find +the average of x,y & z. A. 9. 375 4. 6875 В. 3. 125 0. 3.75
A researcher wants to determine the mean level of mercury found in 3 species of salt water shellfish: clam, oyster and crab. She randomly samples 100 shellfish of each species. She measures the amount of mercury in each specimen. 1. What is the experimental unit? [Select] 2. What is the response variable? [Select] 3. What is the factor? [Select] 4. What are the factor levels? [Select] > > > >
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The following data show the monthly rental price (in $) for a random sample of one- bedroom apartments in York, Pennsylvania: 600 760 660 755 675 780 755 615 Suppose that the Mean of the monthly rental price or one-bedroom apartment in York, Pennsylvania is 700 (x = 700) Fill in the blank by selecting the correct answer from the drop list box The Median of the monthly rental price for one-bedroom apartment in York, Pennsylvania is • The Variance of the monthly rental price for one-bedroom apartment in York, Pennsylvania is • Noting that the sample standard deviation of monthly rental price for one-bedroom apartment in York, Pennsylvania is 71.21, then by using the Empirical Rule, represents the 95.4% interval for the monthly rental price The coefficient of variation of this data is
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Question 1 A paper company has about 50 paper mills distributed over 3 provinces. The 50 papermills have a total of 600 machines. Lately it was found that some of the paper the company produces has a thickness above the specification of 2mm. From historical data it was found that the mean paper thickness 1.3mm the variance of 2. Answer the following questions.
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16. The distribution of the number of chocolate chips (x) in a cookie is shown in the following table. Find the mean and the variance of the number of chocolate chips in a cookie. 1 2 3 4 P(X = x) .01 .03 .05 .11 .13 6 7 8 P(X = x) .24 .22 .16 .05
Suppose the average height of all humans is normally distributed with a mean of 72 inches and a variance of 18 inches. Use this information to answer the following three questions. 1. Determine P(75<x<84). 2. Determine P(x>80). 3. Determine P(x < 65).

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