A. Determine whether this statement is appropriate or not appropriate:
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A report stated that 630 of the parents reported not wanting the child's classmates to get sick as very important in deciding to keep a sick child home from school. The report also noted that the standard error is 0.014.
A. Determine whether this statement is appropriate or not appropriate:
If this survey were replicated many times, each replication providing a 95% confidence interval for the proportion of all parents who consider not wanting the child’s classmates to get sick as very important in deciding to keep a sick child home from school, then 95% of the resulting confidence intervals would be expected to capture the proportion of all parents who consider not wanting the child’s classmates to get sick as very important in deciding to keep a sick child home from school.
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- In a study of 1228 randomly selected medical malpracticelawsuits, it was found that 856 of them were dropped or dismissed (based on datafrom the Physicians Insurers Association of America). Construct a 95 % confidence interval for the proportion of medical malpractice lawsuits that are dropped or dismissed.A survey of 1064 Washington D.C. residents ages 15-30 found that 74% of those surveyed used public transportation at least one time per week. Of those, the mean commute time to ride in one direction was 23 minutes. In a random sampling distribution, the standard error was reported as 1.52 minutes. Find the 95% confidence interval for this random sampling distribution of mean commuting times for Washington, D.C. public transportation users. Show all work and interpret the interval. 3)The transportation authorities received funds to increase the number of busses and trains during peak commute times. Public leaders want to know if this initiative has decreased the mean commute time for D.C. public transportation users, so they compared commute times before and after the increase in busses and trains. State the null and alternative hypotheses according to the wording in this part of the question. C.If the p-value for this comparison was 0.015, state your general conclusion (reject the…In a simple random sample of 9000 wooden artifacts near the Sluys, 5088 were made of cedar. Use this to construct a 99% confidence level confidence interval for the proportion of all wooden artifacts at that site which are made of cedar.
- A simple random sample of 36 8th graders at a large suburban middle school indicated that 84% of them are involved with some type of after school activity. Find the 95% confidence interval that estimates the proportion of them that are involved in an after school activity.An insurance company checks police records on 582 accidents selected at random andnotes that teenagers were at the wheel in 91 of them. Create a 95% confidence interval for theproportion of all auto accidents that involve teenage drivers.of 101 randomly selected mothers, 17% indicated that they pay for private preschool, what is the 99% confidence interval for the proportion of mothers that pay for private preschool
- In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mauled to 2652 subjects randomly selected from an online group involved with ears. 1145 surveys were returned. Construct a 95% confidence interval for the proportion of returned surveys.HelpA trade magazine routinely checks the drive-through service times upper bound of 163.1 seconds. What does this mean? fast-food restaurants. An 80% confidence interval that results from examining 563 customers in one fast-food chain's drive-through has a lower bound of 159.5 seconds and an Choose the correct answer below. O A. One can be % confident that the mean drive-through service time of this fast-food chain is seconds O B. One can be % confident that the mean drive-through service time of this fast-food chain is between seconds and seconds. O C. The mean drive-through service time of this fast-food chain is seconds % of the time. O D. There is a % probability that the mean drive-through service time of this fast-food chain is between seconds and seconds.
- 8.31 In a survey of 823 human resource professionals concerning challenges they faced in the workplace, 329 said that employee retention/turnover was an important challenge and 181 said that employee satisfaction was an important challenge. Source: Data extracted from R. King, "Companies Want to Know How Do Workers Feel," Wall Street Journal, October 14, 2015, p. R3. a. Construct a 95% confidence interval estimate of the population proportion of human resource professionals who believe that employee retention/turnover was an important challenge. b. Construct a 95% confidence interval estimate of the population proportion of human resource professionals who believe that employee satisfaction was an important challenge.A study of 420,039 cell phone users found that 131 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0443% for those not using cell phones. Complete parts (a) and (b). ..... a. Use the sample data to construct a 95% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. • D%A study of 420,097 cell phone users found that 137 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0311% for those not using cell phones. Complete parts (a) and (b). .... a. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. %SEE MORE QUESTIONSRecommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
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