An executive for a large company is considering a change to health insurance plans offered to the employees. Toassess employee satisfaction with the current plan, the executive sends an email to all company employees askingtheir opinion of the current plan. A summary of the results received shows that 27% of company employees are"highly satisfied" with the current health insurance plan. Which statement about the results is most likely to be true?O The results may suffer from undercoverage because the opinions of segments of employees may not be recorded,O The results provide an accurate representation of support because the opinion of all employees has beenrecorded.O The results may suffer from nonresponse bias because many satisfied employees may choose to not respond tothe email survey.O The estimate of 27% for employee support of the health plan is likely accurate because all company employeeswere contacted via email.DellCommandMark this and returnSave and ExitNextSubmit1 update is readInstallre to search69°F Clear AF11F12EBN

Here correct option is third option. The result may suffer from nonresponse bias because many…

Answered: An executive for a large company is…

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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Most engaged couples expect or at least hope that they will have high levels of marital satisfaction. However, because 54% of first marriages end in divorce, social scientists have begun investigating influences on marital satisfaction. (Data Source: National Center for Health Statistics.) A counseling psychologist sets out to look at the role of having children in relationship longevity. She decides to measure marital satisfaction in a group of couples with children and a group of childless couples. She chooses the Marital Satisfaction Inventory, because it refers to "partner" and "relationship" rather than "spouse" and "marriage," which makes it useful for research with both traditional and nontraditional couples. Higher scores on the Marital Satisfaction Inventory indicate greater satisfaction. Assume that these scores are normally distributed. A sample of 39 couples with children scored an average of 51.1 with a sample standard deviation of 9.2 on the Marital Satisfaction…
Sam has conducted a survey to get more information about healthy diets. He hands his survey out to 100 people in the cafeteria at his college. Only 45 people choose to participate in the survey, leaving 55 people that did not respond. Which type of bias does this scenario best describe? Response bias Nonresponse bias Observer effect Placebo bias
b. TripAdvisor is one of many online websites that provides ratings for hotels throughout the world. TripAdvisor uses a semi-automated telephone process to take reservations from its customers. This company conducts a survey of customers, asking them what problems they have encountered in making reservations. The chart below shows the analysis of the customer responses (BS = Busy Signal; TL = Too Long to Wait; GD = Got Disconnected; WP = Transferred to the Wrong Person). Problems Encountered Making Enquiries by Telephone 450 400 400 350 -300 250 200 175 150 100 50 50 25 0 BS TL GD WP Type of Complaint What percentage of customers encountered "Busy Signal" or "Too Long to Wait" when making reservations? Number of Complaints
A social scientist wanted to study the education levels of adults who live in the tristate area of southwestern Pennsylvania, the West Virginia panhandle, and southeastern Ohio. A random sample of 25 middle-aged adults from each region was selected and asked about their highest level of education. The responses are displayed in the table. The scientist would like to know if these data provide convincing evidence that the distribution of education differs for these regions in the population of all tristate residents. Are the conditions for inference met? No, the random condition is not met. No, the 10% condition is not met. No, the Large Counts condition is not met. Yes, all three conditions for inference are met.
According to a survey, basketball is most popular among younger fans (aged 18-29) while baseball and football are most popular for fans 30 years of age or older. Suppose that in a survey of 2,500 randomly selected adults in the United States, respondents are asked to provide their favorite sport to watch out of basketball, baseball, and football. The results of the survey appear below. Favorite Professional Sport to Watch Respondent's Age Range Basketball 18-29 30-54 18-29 30-54 55+ 55+ 250 Total # 185 155 Basketball X X (a) Develop a joint probability table and use it to answer the following questions. Favorite Professional Sport to Watch Respondent's Age Range X Baseball X 110 270 215 Football Baseball X X X 235 x 685 395 Football X X X X Total x x x 1 (b) Construct the marginal probabilities for each of the professional sports leagues (basketball, baseball, and football). basketball baseball football
A dentist wants to a conduct a survey via telephone to determine what percent of all adults in their city floss daily. Which of these is the best example of response bias? Some people might not answer their phone after repeated calls. People with unlisted phone numbers or people with cell phones might be left out of the sample. Some people might refuse to tell a stranger on the phone about their flossing habits. Some people might feel pressured to say they floss even though they don’t.
Based on a USA Today poll, 10% of the population believes that college is no longer a good investment. Would it be unusual if 100 of the chosen people beleive that college is no longer a good investment? What does this result suggest?
Suppose you just graduated with an accounting degree and are trying to choose an accounting firm to begin your career. You spent hours researching many firms and have narrowed your search down to three (i.e. Aguilar, Brown and Cheng). You have surveyed accountants to determine if the average incomes at each firm are equal between each of your top three choices. Obviously you want to join the firm with the highest average pay. Below are a sample of salaries (i.e. eight individuals from each firm) enabling you to test the hypothesis that the average pay (in thousands of $) is equal between employers. Use Fisher's LSD procedure (if necessary) to test whether there is a significant difference between any of the firms. (Show work for full credit, 10 pts) Aguilar Brown Cheng 72 98 80 81 60 54 103 87 60 94 69 45 64 72 53 58 67 42 70 74 67 71 78 80 Using a .05 level of significance complete the hypothesis test below. A. State the null and alternative…
When writing the participant section for your formal report, you include only information that directly describes your participants, and do not include information on measures they have completed. True or false
The National Association of Realtors estimates that 23% of all homes purchased in 2004 were considered investment properties. If a sample of 800 homes sold in 2004 is obtained and it was noted that 248 homes were to be used as investment property, would this be unusual? Answer either "yes" or "no" and provide the justification for your answer.
Among college students, the proportion p who say they’re interested in their congressional district’s election results has traditionally been 65%. After a series of debates on campuses, a political scientist claims that the proportion of college students who say they’re interested in their district’s election results is more than 65%. A poll is commissioned, and 180 out of a random sample of 250 college students say they’re interested in their district’s election results. Is there enough evidence to support the political scientist's claim at the 0.05 level of significance? Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places. a.) State the null hypothesis H0 and the alternative hypothesis H1. b.) Determine the type of test statistic to use (Z, t (with t, degrees of freedom is needed), Chi-Square, or F). c.) Find the value of the test statistic. (Round to three or more decimal places.) d.) Find the p-value. (Round…
In a survey of 1220 adults in a country, 58% said the country's leader should release all medical information that might affect their ability to serve. The study is observational, an experiment, because it applies does not apply a treatment to the adults.

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