Twenty samples, each consisting of 100 admission applications at a university, resulted ina total of 80 applications that had some type of error. Compute the control limits for ap-chart. What would be the impact on the final results if each sample contained 200 loanapplications rather than 100 and all other data remained the same? Please show in detail these impacts quantitatively in your answers
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Twenty samples, each consisting of 100 admission applications at a university, resulted ina total of 80 applications that had some type of error. Compute the control limits for ap-chart. What would be the impact on the final results if each sample contained 200 loanapplications rather than 100 and all other data remained the same?
Please show in detail these impacts quantitatively in your answers.
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- Twenty samples, each consisting of 100 admission applications at a university, resulted in a total of 80 applications that had some type of error. a. Compute the control limits for a p-chart. b. What would be the impact on the final results if each sample contained 200 loan applications rather than 100 and all other data remained the same? c. Please show in detail these impacts quantitatively in your answers.Airlines have increasingly outsourced the maintenance of their planes to other companies. A concern voiced by critics is that the maintenance may be less carefully done, so that outsourcing creates a safety hazard. In addition, flight delays are often due to maintenance problems, so one might look at government data on percent of major maintenance outsourced and percent of flight delays blamed on the airline to determine if these concerns are justified. This was done, and data from 2005 and 2006 appeared to justify the concerns of the critics. Do more recent data still support the concerns of the critics? Data from 2014 is in the given table. Airline Alaska American Delta Frontier Hawaiian JetB1 Ue South west United U.S Airways Outsource Percent 51.0 29.4 36.7 46.3 78.4 68.4 58.2 52.6 54.3 Delay Percent 10.3 20.3 14.48 21.42 5.06 19.93 28.47 23.46 13.68 Select the scatterplot that correctly represents the data from 2014. (B) Select the statement…Rosner analyzed data from children who lived near a lead smelter (which is a facility that uses extreme heat to extract the metal lead from lead ore) in El Paso, Texas, and reported that out of 124 children studied, 23 developed colic (which is a pattern of fussiness and crying for no apparent reason). Suppose that in the state of Taxes in general at the time (early 1980s), the rate of colic in children was 16.0%. Follow the steps for testing whether the proportion of children developing clico was significantly different for the 124 children living near the lead smelter than for Taxes children in general (16%). Use alpha level of 0.03 a. Identify the null hypothesis for this statistical test. b. Identify the alternative hypotheses for this statistical test. c. Explain: Why should this be a two-tailed test, the way I have described it? d. calculate the sample proportion p̂, rounded to three decimal places. e. Calculate the appropriate test statistic, show all work. f. Based on…
- The president of the American Insurance Institute wants to compare the yearly costs of auto insurance offered by two leading companies. He selects a sample of 15 families, some with only a single insured driver, others with several teenage drivers, and pays each family a stipend to contact the two companies and ask for a price quote. To make the data comparable, certain features, such as the deductible amount and limits of liability, are standardized. The data for the sample of families and their two insurance quotes are reported below. At the 0.10 significance level, can we conclude that there is a difference in the amounts quoted? Hint: For the calculations, assume the "Midstates Car Insurance" as the first sample. Midstates Car Gecko Mutual Family Insurance Insurance Becker $ 2,090 $ 1,610 Berry 1,683 1,247 Cobb 1,402 2,327 Debuck 1,830 1,367 DuBrul 930 1,461 Eckroate 697 1,789 German 1,741…20 out of 200 men randomly selected in a region and 30 out of 300 women are against vaccination. What is the point estimate of the difference between the proportions of non-vaccines between men and women?The Chi-Square analysis provides researchers with a specific estimate of the overall significance for the relationship between an outcome and a categorical exposure variable when there are more than 2 categories, but in order to assess the individual relationships, researchers should calculate individual risk ratios. True False
- The Ministry of Natural Resources is about to embark on an exercise to estimate the potential for the development of a Non-Timber Forest Products industry in Region One, Barima/Waini. A survey is to be carried out with the aim of establishing quantitative benchmarks regarding the Region’s resource endowment. can you help me to suggest an appropriate problem statement to be associated with the activity?According to the World Health Organization, obesity has reached epidemic proportions globally. While obesity has generally been linked with chronic disease and disability, researchers argue that it may also affect wages. In other words, the body mass index (BMI) of an employee is a predictor for salary. (A person is considered overweight if his/her BMI is at least 25 and obese if BMI exceeds 30.) The accompanying data file includes salary (in $1,000s) for 30 college-educated men with their respective BMI and a dummy variable that represents 1 for a white man and 0 otherwise. Salary BMI White 34 33 1 43 26 1 44 26 1 34 35 0 34 36 1 53 20 1 42 20 0 37 26 1 35 28 1 46 22 1 46 20 1 34 35 0 45 26 1 33 34 0 25 29 0 32 30 1 46 18 0 31 31 0 54 19 1 37 23 0 42 27 1 38 30 1 45 18 0 38 26 0 41 28 1 39 28 1 50 20 1 41 26 1 38 28 1 45 21 1 1. Estimate a model for Salary with BMI and White as the predictor variables. Note: Negative…A universal childcare program was introduced in London in the early 2000s. Comparing the years before and after the implementation of the policy, the employment rate for mothers of children under 5 in London increased from 40 percent to 60 percent. What assumption we need for the difference in employment rates for mothers of children under 5 in London to be a causal estimate of the impact of the policy?
- In your own words, describe the differences in how individual-level effects are treated when using pooled OLS, a fixed effects model, or a random effects model to estimate the impact of X on Y using panel data.An employee survey conducted two years ago by a company found that 46% of its employees were concerned about future health care benefits. A random sample of 84 of these employees were asked if they were now concerned about future health care benefits. Assuming that there has been no change in the level of concern about health care benefits compared to the survey two years ago, what is the upper limit of the sample proportion such that only 3% of the time the sample proportion would exceed this value?At the 5% significance level, is there evidence that the body weight of the athlete is a useful predictor for the total amount an athlete can lift? Assume the assumptions can be verified.