The best way to increase the response rate of a mail survey is to: a. carefully select the respondents b. use a short questionnaire c. offer monetary incentives to respondents d. use one or more follow-up reminders
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A: We have to find sample proportion.
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A: Assume, p^ be the estimated proportion of computers with new operating system. n be the minimum…
Q: According to The Census Bureau, 60% of adults buy clothing online. a) How many adults did they…
A: Solution: a. From the given information, p=0.60 and E=0.03. The confidence level is 0.95.
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A: Given: Margin of error = 4% Confidence level = 99%
Q: b) Consider the following set of data; 0.87 , 0.88 , 0.91, 0.92, 0.86, 0.91,…
A: Given 0.87 , 0.88 , 0.91, 0.92, 0.86, 0.91, 0.90, 0.93, 0.82, 0.89, 0.87
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A: The Margin of Eroor (MOE) = z * √p * (1 - p) / √nWhere: z = 1.96 for a confidence level (α) of 95%,…
Q: A programmer plans to develop a new software system. In planning for the operating system that he…
A: From the provided information, Margin of error (E) = 0.03 Confidence level = 95%
Q: Three different milling machines were being considered for purchase by a clothing manufacturing…
A: Null hypothesis: H0:µ1 = µ2 = µ3 Alternative hypothesis: H1: At least one of the means is different…
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A: a:For the given data, the chi-square test for association is appropriate.Null Hypothesis:H0: The…
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A: To calculate the sales margin variance, we first need to calculate the actual contribution margin…
Q: Three different milling machines were being considered for purchase by a clothing manufacturing…
A: Given : Number of category = k = 3 Total number of observation = N = 15
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A: Note:- Many a times, type of data would depend on the specific application as to how the data is…
Q: A programmer plans to develop a new software system. In planning for the operating system that he…
A: From the provided information, Margin of error (E) = 0.05 Confidence level = 90% Assuming the sample…
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A: Reliability is a vital criterion that assesses and measures an object based on consistency,…
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A: Given that, Food services sent a survey to student, faculty, and staff in order to understand the…
Q: Three different milling machines were being considered for purchase by a clothing manufacturing…
A: Null hypothesis: H0:µ1 = µ2 = µ3 Alternative hypothesis: H1: At least one of the means is different…
Q: A programmer plans to develop a new software system. In planning for the operating system that he…
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A: (a) Given that , The confidence level is, C = 95% = 95/100= 0.95 The level of significance is, α =…
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Q: Develop three categorical questions for the survey.c. Develop three numerical questions for the…
A: Following are the three categorical questions:
Q: A programmer plans to develop a new software system. In planning for the operating system that he…
A: Given,Margin of error(E)=0.05α=1-0.90=0.1α2=0.05Z0.05=1.645
Q: A certain company will purchase the house of any employee who is transferred out of state and will…
A: (a) The provided table can be tabulated as: The alternative hypothesis suggests that the test is…
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A: When writing the participant section for your formal report, you include only information that…
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Q: Three different milling machines were being considered for purchase by a clothing manufacturing…
A: Three different milling machines were being considered for purchase by a clothing manufacturing…
Q: Readers of the magazine Popular Science (August 1990) were asked to phone in (on a 900 number) their…
A: The poll conducted by Popular Science in 1990, where readers were asked to phone in their responses…
The best way to increase the response rate of a mail survey is to:
a. carefully select the respondents
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- 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 90% confident that his estimate is in error by no more than five percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n=0 (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 95% of computers use a new operating system. n=0 (Round up to the nearest integer.) c) Does the additional survey information from part (b) have much of an effect on the sample size that is required? O A. No, using the additional survey information from part (b) does not change the sample size. O B. No, using the additional survey information from part (b) only slightly increases the sample size. OC. Yes, using the additional survey information from…The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.The IRS is concerned with improving the accuracy of tax information given by its representatives over the telephone. Previous studies involved asking a set of 25 questions of a large number of IRS telephone representatives to determine the proportion of correct responses. Historically, the average proportion of correct responses has been 72 percent. Recently, IRS representatives have been receiving more training. On April 26, the set of 25 tax questions were again asked of 20 randomly selected IRS telephone representatives. The proportions of correct answers were: 21, 20, 19, 16, 22, 15, 21, 15, 17, 15, 24, 17, 24, 21, 18, 16, 23, 16, 21, and 20. a. What are the upper and lower control limits for the appropriate p-chart for the IRS? Use z = 3. The UCL, equals and the LCLp equals ☐ . (Enter your responses rounded to four decimal places. If your answer for LCLp is negative, enter this value as 0.)
- For the three-part question that follows, provide your answer to each question in the given workspace. Identify each part with a coordinating response. Be sure to clearly label each part of your response as Part A, Part B, and Part C.Part A: What is the term for a generalization made about a population using the data from a sample?Part B: Name one challenge that may occur when using a sample to draw a conclusion about a population.Part C: A researcher collects data about the annual salary of employees who work in the information technology field. It would be difficult to survey all employees, so a sample of the population is surveyed. The data is recorded below. Use the table to write one conclusion that can be drawn. Explain why this conclusion is valid. Salary Range (Per Year) Number of Employees $50,000-$59,999 147 $60,000-$69,999 159 $70,000-$79,999 225 $80,000-$89,999 27A certain company will purchase the house of any employee who is transferred out of state and will handle all details of reselling the house. The purchase price is based on two assessments, one assessor being chosen by the employee and one by the company. Based on the sample of eight assessments shown, do the two assessors agree? Use the .01 level of significance. Assessments of Eight Homes ($ thousands) Assessed by Home 1 Home 2 Home 3 Home 4 Home 5 Home 6 Home 7 Home 8 Company 330 345 452 270 298 286 537 744 Employee 317 350 473 280 307 283 523 769 Click here for the Excel Data File (a) Choose the appropriate hypotheses. Assume d = company assessed value – employee assessed value. multiple choice 1 H0: μd = 0 versus H1: μd ≠ 0. H0: μd ≠ 0 versus H1: μd = 0. (b) State the decision rule for .01 level of significance. (Round your answers to 2 decimal places. A negative value should be indicated by a minus sign.) Reject the null hypothesis if tcalc < or…The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 90% confident that his estimate is within eight percentage points of the true population percentage? Complete parts (a) through (c) below. ... a) Assume that nothing is known about the percentage of adults who have heard of the brand. n= (Round up to the nearest integer.)
- Sony wants to administer a satisfaction survey to its current customers. Using their customer database, the company randomly selects 90 customers and asks them about their level of satisfaction with the company. What type of sampling is used? O A. Systematic O B. Stratified O C. Convenience O D. Simple random O E. ClusterEstimate the percentage of the U.S. population that reacts negatively to the Confederate flag.a. less than 10 percentb. between 10 – 25 percentc. between 25 – 50 percentd. more than 50 percent Estimate the percentage of your peers (i.e., individuals in your age generation) that believe same-sex marriage should be legal.a. less than 10 percentb. between 10 – 25 percentc. between 25 – 50 percentd. more than 50 percentIn September 2016, a Gallup poll asked the following question of 1020 adults. In general, how much trust and confidence do you have in mass media? 32% responded that they have “a great deal” or “a fair amount” of trust.A) Sample data B) Census data
- The following is not a graded test. It is just a homework practice problems. Case Problem: Young Professional Magazine Young Professional magazine was developed for a target audience of recent college graduates who are in their first 10 years of a business or other professional career. The magazine has been fairly successful and the publisher is interested in expanding the publication’s advertising base. As a recent hire into the marketing department at the magazine, you have been asked to help develop a survey asking readers demographic information and questions about their interests. Your survey results will be used to help the magazine choose articles of interest and provide advertisers with a profile of subscribers. The culmination of your work will be a presentation of your findings to management. Therefore, you not only have to present summary data, but must also be able to explain the results in a manner that is accurate and easy to understand. Based on…In planing for his children to go back to school Susan buys several items at a discount. Five items at $1.29 each, three at $1.49 each, six at $1.79 each and nine at $0.99 each. What was the median cost of all items? $1.48 Oa. Ob. O b. $1.99 c. Oc. $1.33 O d. $1.39 $1.29 O e.The phone bills for Dr. Kinch's cellular phone over the last seven months were as follows: $98, $410, $112, $180, $217, $345, and $207. Find the median phone bill. ..... The median phone bill is $