A sample of 35 individuals at a shopping mall found that the mean number of visits to a restaurant per week was 2.68 with a standard deviation of 1.64. Find a 90% confidence interval for the mean number of restaurant visits. A 90% confidence interval for the mean number of restaurant visits is (Use ascending order Round to two decimal places as needed)

Q: Wheel thickness on a train is random because wear and tear causes the wheel to wear down. The…

A: We have given that,  Sample mean or average (x̄) = 8.29, standard deviation (σ) = 0.52 and sample…

Q: Researchers found that in certain counties in the country, females spend an average of 65 days in…

A: standard deviationσ=4n=36x¯=65

Q: A sample of 22 public high school students spent an average of 6.5 hours studying per week. Assume…

A:

Q: A study of peach trees found that the average number of peaches per tree was 625.  The standard…

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Q: The 95% confidence interval for the population slope was calculated as (0.751,0.947). Based on the…

A: We have given  The confidence interval for slope is given to be (0.751, 0.947)

Q: The heights of pine trees at a local tree farm are known to follow a normal distribution with a…

A: Given: Sample Sizen=99Sample MeanX=121Standard Deviationσ=7 The z value corresponding to the area…

Q: ta 99% confidence interval for the mean number of hours a student studies per week. Assume that the…

A: We are going to find 99% confidence interval by finding the critical value

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A: The sample size for men is 38, standard deviation is 3.3, and mean is 12.8. The sample size for…

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A:

Q: A study was commissioned to find the mean weight of the residents in certain town. The study…

A: Given: n=58, x=174 and s=38. Now,Degrees of freedom=n-1=58-1=57 Then, at 95% confidence level, the…

Q: A fitness center is interested in finding a 90% confidence interval for the mean number of days per…

A: Given Information: Sample size (n) = 241 Sample mean (x¯) = 2.3  Standard deviation (s) = 2.9 To…

Q: A survey of college students reported that in a sample of 371 male students, the average number of…

A: Obtain the 98% confidence interval for the difference between men and women in the mean number of…

Q: Find the lower limit of 95% confidence interval. An SRS of 36 students were taken from high schools…

A: Given Mean=85 Standard deviations=7.15 n=36

Q: A study found that the average time it took a person to find their dream home was 5.9 months. If a…

A: From the provided information, Sample size (n) = 36 Sample mean (x̅) = 5.9 months Population…

Q: A sample of 41 individuals at a shopping mall found that the mean number of visits to a restaurant…

A: It is given thatSample mean, X¯=2.87Sample std. deviation, s=1.61Sample size, n=41

Q: The age when smokers first start from previous studies is normally distributed with a mean of 13…

A: Given,sample size(n)=22sample mean(x¯)=13.8standard deviation(σ)=2.1α=1-0.90=0.1α2=0.05Z0.05=1.645…

Q: recent survey of 7 social networking sites has a mean of 13.47 million visitors for a specific…

A: We need to construct the 99%99\%99% confidence interval for the population mean μ\muμ. The following…

Q: A group of students go to a lake that you fished in, and caught 28 adult striped bass fish. The mean…

A: Obtain the 95% confidence interval for the population mean of adult striped bass for that lake. The…

Q: A study analyzed the body fat percentage of 80 ISU students. The sample mean was 23.70 and the…

A:

Q: A random sample of 125 adult females was selected as part of a study on weight loss. The average…

A: Given: n=125, x=212 pounds, σ=18, α=1-0.95=0.05

Q: find the 99% confidence interval of the mean number of miles driven per day by all truckers

A: It is given that  Average = 540 Population standard deviation = 40 Sample size = 90

Q: A sample of 22 public high school students spent an average of 6.5 hours studying per week. Assuming…

A: Given: Sample Sizen=22Sample MeanX=6.5Standard Deviationσ=2.3 The z value corresponding to…

Q: A sample of 22 public high school students spent an average of 6.5 hours studying per week. Assuming…

A:

Q: The average number of calories in a sample of 50 regular bagels is 405. If the standard deviation is…

A:

Q: One​ year, the mean age of an inmate on death row was 39.1 years. A sociologist wondered whether the…

A: Population mean, μ=39.1 Sample size, n=32 Sample mean, x¯=37.7 Sample standard deviation, s=9.2…

Q: An SRS of 27 students at NYU gave an average height of 5.4 feet and a standard deviation of .1 feet.…

A: Given that, An SRS of 27 students at NYU gave an average height of 5.4 feet and a standard deviation…

Q: Blood sugars from eight patients in a rural clinic were recorded last summer by the local physician.…

A: Given data is120, 145, 200, 250, 79, 100, 894, 255sample size(n)=8standard deviation(σ)=5confidence…