Michelin Tires would like to estimate the average tire life of its Latitude Tour tire in terms of how many miles it lasts.  Determine the sample size needed to construct a 98% confidence interval with a margin of error equal to 2000 MI assume the standard deviation for the tire life of this particular brand is 8,000 miles.

Q: A city planner wants to estimate the average monthly residential water usage in the city. He…

A: The provided sample mean is Xˉ=3407.80\bar X = 3407.80 gallons and the population standard deviation…

Q: A new drug shows promise in decreasing cholesterol. Marketing needs the average cholesterol…

A: Given that,

Q: The manufacturer of a particular brand of tires claims they average at least 50,000 miles before…

A: Given : Pop. standard deviation (σ) = 8000 Sample size = 21 Sample mean (X) = 41500 α = 0.05

Q: een asked by Forest Hill Elementary School to evaluate the school's drinking water. The lab tested…

A: We have, x¯=sample mean=8.43s=sample standard deviation=1.12n=sample size=24Confidence…

Q: In question 2 a 90% confidence interval was computed based on a sample of 250 adults. If the level…

A:

Q: GLL insurance company often tracks life expectancy information to determine life insurance policies…

A: Given data: Average (x-bar) = 79.6 years Standard deviation (s) = 3.56 years Margin of error (E) = 1…

Q: In a service system at a bank, a sample of 40 customers is taken and the average waiting time is 12…

A: GivenMean(x)=12standard deviation(s)=2.4sample size(n)=40

Q: A random sample of 20 patrons from a Wolfville restaurant were chosen. Their tips measured in…

A: From the provided information,

Q: Wildlife conservationists studying grizzly bears in the United States found that the mean weight of…

A: given data n = 24x¯ = 600s = 8395% ci for μ.

Q: Forty adults used the Atkins weight loss program. After 12 months, their mean weight loss was found…

A: From the Standard Normal Table, the value of z* for 90% level is 1.645.

Q: A data set includes 103 body temperatures of healthy adult humans having a mean of 98.5°F and a…

A: According to the given question A data set includes 103 body temperatures of healthy adult humans…

Q: The mean hours of worked for United Airlines pilots is 46 hours/month based upon a sample of 25…

A: Given: Sample size, n=25 Sample mean, X=46 hours Sample standard deviation, s=3 hours The level of…

Q: Determine whether the given procedure results in a binomial distribution. If it is not​ binomial,…

A:

Q: An environmental agency is interested in the fuel efficiency of cars in a local city. The research…

A: Given  x=21.43 s=5.72 n=40

Q: I want to estimate the average time it takes a tomato plant to bear fruit. I randomly sample 16…

A: Given,sample size(n)=16mean(x¯)=36standard deviation(σ)=17α=1-0.85=0.15α2=0.075Z0.075=1.4395…

Q: To determine the average number of minutes it takes to manufacture one unit of a new product, an…

A: Given information Sample size (n) = 15 Sample mean x̅ = 3.92 Standard deviation (s) = 0.45 Taking…

Q: A sample of 36 men has a mean weight of 175 pounds with a sample standard deviation of 13 pounds.…

A: It is given that sample mean is 175 and standard deviation is 13.

Q: The mean total cholesterol level for men being treated for obesity  is 175 with a standard deviation…

A: The mean of the sample means is 175.

Q: You measure 43 backpacks' weights, and find they have a mean weight of 72 ounces. Assume the…

A: We have given that, Sample mean (x̄) = 72, population standard deviation (σ) = 11.7 and sample size…

Q: 3. A sample of 25 malpractice lawsuits filed against doctors showed that the mean compensat: awarded…

A:

Q: In a test of the effectiveness of garlic for lowering cholesterol, 42 subjects were treated with…

A: Given: The number of subjects that were treated with garlic in a processed tablet form are n=42. The…

Q: random sample of 15 students was selected from a population size of 100 (normal) in a certain…

A:

Q: Brown measured his book using a different shaped ruler. He got different measurements, namely 30,…

A: Given that  Different measurements he got 30 , 35 , 29 , 33 , 32 , 28 , 28 , 35 Sum of data value =…

Q: In a survey study conducted with students who graduated from the engineering faculty, the number of…

A: We have to find food engineering in the circle chart...

Q: A city planner wants to estimate the average monthly residential water usage in the city. He…

A: As per guideline expert have to be answer first question only..

Q: You want to estimate the mean weight of quarters in circulation. A sample of 50 quarters has a mean…

A: From the provided information, Sample size (n) = 50 Sample mean (x̄) = 5.625 grams Standard…

Q: The owner of Limp Pines Resort wanted to know the average age of its clients. A random sample of 25…

A: We have given that Sample size (n) = 25Sample mean (x̅) = 46Standard deviations (s) = 5Confidence…

Q: A food snack manufacturer samples 11 bags of pretzels off the assembly line and weighs their…

A:

Q: A popular weight loss program claims users will lose weight each month. Linda samples 25 dieters and…

A: We have given that,  Sample mean (x̄) = 10 pounds, standard deviation (s) = 2 pounds and sample size…

Q: The sample mean weight of 65 adult African elephants was measured to be 14,325.62 pounds, with a…

A: Solution : Given :  n= 65, X¯ = 14325.62 pounds, σ = 872.71 pounds , α = 0.10 Let us define , H0 : μ…

Q: Glaucoma is a leading cause of blindness in a certain country. An ophthalmologist measured the…

A: A confidence interval is a numeric value that a researcher will be reasonably confident in and…

Q: The lead levels in a random sample of 23 crows in the region were measured and recorded. The mean…

A:

Q: The pH of rain, measured at a weather station in Michigan, was observed for 39 consecutive rain…

A:

Q: The manufacturer of a particular brand of tires claims they average at least 50,000 miles before…

A: The objective of this question is to test the manufacturer's claim that the tires last at least…

Q: An SRS of 23 students at TSU gave an average height of 5.6 feet and a standard deviation of .1 feet.…

A:

Q: The manufacturer of a particular brand of tires claims they average at least 50,000 miles before…

A: Given information Population mean µ = 50000 Sample size n = 21 Sample mean x̅ = 46500 Standard…

Q: Caffeine is considered the most commonly used psychoactive drug in the world. It is estimated that…

A:

Q: 1. A sample of 36 vacation homes built during the past two years in the coastal region had a mean…

A:

Q: interval of the true standard deviation of the diameter of golf balls.

A: Here use confidence interval for population variance

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.