Mary is the production manager of the potato chip division. She gets bonus equal to 10% of her base salary if the division meets its target profit. She realized that the preliminary profit figures for the division is $10,000 below the target profit. She is considering changing the estimated percentage completion with respect to materials and conversion in ending work in process inventory of the final processing department to increase the profit. Does Mary want the percentage completion to be increased or decreased? Briefly explain your reasoning. Do you think Mary should change the percentage completion? Why or why not?

Write at least 600 words.

A programmer plans to develop a new software system. In planning for the operating system that he will​ use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 99​% confident that his estimate is in error by no more than three percentage points question marks?

​a) Assume that nothing is known about the percentage of computers with new operating systems.

n=___

​b) Assume that a recent survey suggests that about 85​% of computers use a new operating system.

n=____

c) Does the additional survey information from part​ (b) have much of an effect on the sample size that is​ required?

In a study of government financial aid for college​ students, it becomes necessary to estimate the percentage of​ full-time college students who earn a​ bachelor's degree in four years or less. Find the sample size needed to estimate that percentage. Use a 0.04 margin of error and use a confidence level of 95​%. Complete parts​ (a) through​ (c) below.

a. Assume that nothing is known about the percentage to be estimated. ​(Round up to the nearest​ integer.)

N=600

b. Assume prior studies have shown that about 60​% of​ full-time students earn​ bachelor's degrees in four years or less.

​(Round up to the nearest​ integer.)

What measure of disease frequency is each of the following? (Incidence density, cumulative incidence, period prevalence, point prevalence).

a. The percentage of 70-year-old men living in Harris County who develop pneumonia between January 1, 2011 and December 31, 2011.

b. The percentage of women who delivered babies on December 31, 2010.

c. The percentage of fifth graders who meet the criteria for obesity during the 2011-2012 school year.

d. The number of live-born babies who die of sudden infant death syndrome during the first year of life per 100,000 baby-years of follow-up.

Suppose that you want to create a portfolio that consists of stock X and stock Y. For a​ $1,000 investment, the expected return for stock X is $ 71 and the expected return for stock Y is $ 102. The variance for stock X is 2,700 and the variance for stock Y is 8,625. The covariance of stock X and stock Y is 5,976.

Complete parts​ (a) through​ (c).

a.) Compute the portfolio expected return and portfolio risk if the percentage invested in stock X is 30 %.

b.) Compute the portfolio expected return and portfolio risk if the percentage invested in stock X is 50 %.

c.)Compute the portfolio expected return and portfolio risk if the percentage invested in stock X is 80 %.

Does Mars, Incorporated use the same percentage of red candies in its plain and peanut varieties? A random sample of 200 plain M & Ms contained 42 red candies and a random sample of 240 peanut M & Ms contained 68 red candies. Assume that the samples are independent.

1. Construct and interpret a 95% confidence interval for the difference between the parameters of interest.

2. Do the data indicate a difference in the percentage of red candies for plain and peanut M & Ms? Use .

3. Do the data indicate that plain M & M candies contain a smaller percentage of red candies? Use .

1. Marijuana Study: In question 2, referred to a Pew poll of 1500 adults, and 52% of the respondents said that the use of marijuana should not be made legal.

1. Among the 1500 adults who responded, what is the number of respondents who said that the use of marijuana should not be made legal?

2. In the same poll of 1500 adults, 345 of the respondents said that the use of marijuana for medical purposes should not be legal. What percentage of respondents who said that the use of marijuana for medical purposes should not be legal?

3. In this survey of 1500 adults, 727 are men and 773 are women. Find the percentage of respondents who are men, and then find the percentage of respondents who are women.

A corporation only recruits applications who attended one of three schools: College A, B and C. The director HR knows that 10% of the job applicants attended A, 30% attended B and the rest attended C. However 60% of all applicants from A, are offered positions in the Corporation, whereas only 35% of applicants from B and 25% of applicants from C are given offers.

i) What percentage of offer letters go to applicants from College A?

ii) What percentage of offer letters go to applicants from College B?

iii) What percentage of offer letters go to applicants from College C?

The National Football League (NFL) records a variety of performance data for individuals and teams. To investigate the importance of passing on the percentage of games won by a team, the following data show the conference (Conf), average number of passing yards per attempt (Yds/Att), the number of interceptions thrown per attempt (Int/Att), and the percentage of games won (Win%) for a random sample of 16 NFL teams for a season.

ta. Develop the estimated regression equation that could be used to predict the percentage of games won given the average number of passing yards per attempt (to 1 decimal). Enter negative value as negative number.

Win % = _______+_________*Yds/At

b. Develop the estimated regression equation that could be used to predict the percentage of games won given the number of interceptions thrown per attempt (to 1 decimal). Enter negative value as negative number.

Win % = _______+_________*Yds/Att

c. Develop the estimated regression equation that could be used to predict the percentage of games won given the average number of passing yards per attempt and the number of interceptions thrown per attempt (to 1 decimal). Enter negative value as negative number.

Win % = _______+_________*Yds/Att+______*Int/Att

d. The average number of passing yards per attempt for the Kansas City Chiefs was 6.2 and the number of interceptions thrown per attempt was 0.036. Use the estimated regression equation developed in part (c) to predict the percentage of games won by the Kansas City Chiefs. (Note: For a season the Kansas City Chiefs' record was 7 wins and 9 losses.) Compare your prediction to the actual percentage of games won by the Kansas City Chiefs (to whole number).

Predicted Percentage _________ (<, >, =) Actual Percentage ___________

The National Football League (NFL) records a variety of performance data for individuals and teams. To investigate the importance of passing on the percentage of games won by a team, the following data show the conference (Conf), average number of passing yards per attempt (Yds/Att), the number of interceptions thrown per attempt (Int/Att), and the percentage of games won (Win%) for a random sample of  NFL teams for a season

a. Develop the estimated regression equation that could be used to predict the percentage of games won given the average number of passing yards per attempt (to 1 decimal). Enter negative value as negative number.

b. Develop the estimated regression equation that could be used to predict the percentage of games won given the number of interceptions thrown per attempt (to 1 decimal). Enter negative value as negative number.

c. Develop the estimated regression equation that could be used to predict the percentage of games won given the average number of passing yards per attempt and the number of interceptions thrown per attempt (to 1 decimal). Enter negative value as negative number.

d. The average number of passing yards per attempt for the Kansas City Chiefs was  and the number of interceptions thrown per attempt was . Use the estimated regression equation developed in part (c) to predict the percentage of games won by the Kansas City Chiefs. (Note: For a season the Kansas City Chiefs' record was  wins and  losses.) Compare your prediction to the actual percentage of games won by the Kansas City Chiefs (to whole number).