study of the accuracy of fast Tood drive-through orders, Restaurant A had 225 accurate orders and 69 that were not accurate a. Construct a 95% confidence interval estimate of the percentage of orders that are not accurate. b. Compare the results from part (a) to this 95% confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.203

Q: Several years ago, 50% of parents who had children in grades K-12 were satisfied with the quality of…

A: Given claim: 50% of the parents who had children in grades K-12 were satisfied with the quality of…

Q: Imagine you are a researcher and have just completed data analysis on a new device that measured a…

A: The data analysis provides valuable information to about the blood oxygen level who visited the…

Q: In a random sample of 100 customers, the items that customers purchased were tracked. It was found…

A: Given,sample size(n)=100sample proportion(p^)=0.171-p^=1-0.17=0.83α=1-0.90=0.1α2=0.05Z0.05=1.645

Q: Several years ago, 36% of parents who had children in grades K-12 were satisfied with the quality of…

A:

Q: 2. A recent study of 25 students showed that they spent on average of $18.35 for gasoline per week.…

A: Given  x̄ = 18.35 n=25 s=3 degree of freedom = df = n -1 = 25-1 = 24 significance level α = 0.10…

Q: 829 adult were surveyed in one cityand 51% of them are opposed to the use of the photo-cop for…

A: Solution

Q: Greece has faced a severe economic crisis since the end of 2009. A Gallup poll surveyed 1,000…

A:

Q: The International Nanny Association (INA) reports that in a sample of 928 in- home child care…

A: Solution: A. Let X be the number of number of nannies who have passed the INA certification exam and…

Q: 318 who said yes. What proportion of the students does not read story books? Use 95% confidence…

A: We have given that  Sample size n = 1000 Favorable cases x = 318 Sample proportion p^=x/n =318/1000…

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 500…

A:

Q: The 90% confidence interval is from to. (Round to three decimal places as needed.)

A: A poll of 1030 adults in a country was conducted by telephone. Of those surveyed, 139 had…

Q: According the the U.S. Census bureau, the percentage of Santa Ana residents living in poverty is…

A: Given: p^1=0.177p^2=0.133n1=1200n2=1500

Q: Several years ago, 44% of parents who had children in grades K-12 were satisfied with the quality of…

A: The null and alternative hypotheses are:   H0:p=0.44.   H­1:p≠0.44.

Q: Suppose that a health expert has claimed that 28% of college students smoke cigarettes. To…

A: Given 95% confidence interval for the percentage of college students who smoke is 19% to 24%. Given…

Q: 9. A survey found that out of 900 workers, 150 said they were interrupted by frank phone calls. Find…

A:

Q: According to a recent study only 34% of adults in the United States could name all three branches of…

A: Given data, p=34%=0.34 n=1750 z-value at 95% confidence is Zc=1.96

Q: Which of the following would result in the narrower confidence interval?

A: Note: The confidence interval with small confidence level has the narrower confidence interval. The…

Q: . The mean and standard deviation of the scores of a random sample of 45 Grade 10 students who took…

A: Given n=45 , x=76 , s=12.5

Q: An educator was trying to determine the effect of remote learning on middle school aged children.…

A: An educator was trying to determine the effect of remote learning onmiddle school aged children.…

Q: 24. Job Interviews In a Harris poll of 514 human resource professionals, 90% said that the…

A: From the parts b) and c), the 99% confidence interval is (0.8659 , 0.9341) and the 80% confidence…

Q: If the number of smokers in a sample of 160 students selected from university A is 56 and the number…

A: From the provided information,

Q: Several years ago, 48% of parents who had children in grades K-12 were satisfied with the quality of…

A: Given : n = 1035 X = 497

Q: Your analysis of the raw data indicates that 16 of the 30 students reported driving no more than 20…

A: From the given information, let X be the number of students reported no more than 20 miles per day.…

Q: National statistics show that 23% of men (sample 1) smoke and 18.5% of women (sample 2) do. A random…

A: We need to construct the 95%95\%95% confidence interval for the difference between population…

Q: The ability to find a job after graduation is very important to GSU students as it is students at…

A: Sample size n=3878Favorable cases x=3241

Q: A 95% confidence interval is constructed in order to estimate the proportion of adults who own an…

A:

Q: Alan wants to estimate the proportion of adults who walk to work. In a survey of 10 adults, he finds…

A: Given: Alan wants to estimate the proportion of adults who walk to work. Total number of adults=10…

Q: Construct a 90% confidence interval for the true proportion of all employees of People Plus Pty who…

A: The point estimate of population proportion is sample proportion. The point estimate is as follows:…

Q: In a survey participated by 100 college students, it was found out that 60% of them have personal…

A: Given data,Number of college students n=100Proportion of students who have personal computers at…

Q: A study is conducted by a physical therapist to determine whether there is a difference in the…

A: From the provided information, n1=550p^1=0.22n2=450p^2=0.195 Confidence level = 90%

Q: In a survey of 824 human resource professionals concerning challenges they faced in the workplace,…

A: Given information No of resource professionals n = 824 No of people who said that employee…

Q: Several years ago, 44% of parents who had children in grades K-12 were satisfied with the quality of…

A: Given-                        Hypothesized Population proportion (p0) = 44% = 0.44…

Q: When Mendel conducted his famous genetics experiments with peas, one sample of offspring consisted…

A: a. The sample proportion of yellow peas is, Thus, the sample proportion of yellow peas is 0.262.

Q: 10. Several years ago, 51% of parents who had children in grades K-12 were satisfied with the…

A: As per the honor code, We’ll answer the first question since the exact one wasn’t specified. Please…