The average weight of 36 randomly selected school buses was 4150 pounds with a standard deviation of 480 pounds. Find a 99% confidence interval for mew , the true weight mean of the school buses.

Q: The election results were announced in a country. The number of seats in state Mozi had a mean of…

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Q: The tallest living man at one time had a height of 261 cm. The shortest living man at that time had…

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Q: The class mean for the exam was 82 with a standard deviation of 6.  There are 37 students in the…

A: We have given that, Mean = 82 , standard deviation σ = 6  sample size n = 37   Standard error of the…

Q: lves have a mean  weight of 100 pounds, with a standard deviation of 24 pounds. Find the weight…

A: Find the weight range for the central 82% of the wolves.

Q: The speeds of all cars on the tollway was found to be normally distributed with a mean of 63 miles…

A: It is given that that µ=63 mile per hour. Obtain the standard deviation of the speeds of all cars:

Q: The Stanford-Binet IQ test is scaled so that scores have a mean of 100 and a standard deviation of…

A: Let "X" be the Stanford-Binet IQ test

Q: The mean weight of a popular breed of bull is 1135 pounds with a standard deviation of 97 pounds.…

A: According to the given information in this question We need to find the value of standard error

Q: A simple random sample of 36 observations was taken from a large population. The sample mean and the…

A: The sample mean and the standard deviation are μ = 80 and σ = 12 respectively.Let X denotes the…

Q: The weights of college football players are normally distributed with a mean of 200 pounds and…

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Q: The results of a common standardized test used in psychology research is designed so that the…

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Q: What is the z-score for this raw score?

A: Let ,  Our aim is to find the Z-score .

Q: The monthly rents for studio apartments in Abu Dhabi have a mean of AED 3370 and a standard…

A: given data  μ= 3370σ = 680n = 64mean and standard error= ?

Q: The results of a common standardized test used in psychology research is designed so that the…

A: Suppose that the random variable x defines the scores in psychology research.

Q: A businessman calculated the average price of variety A rice per kilo at ₱32.00 with a standard…

A: First calculate sample mean and sample standard deviation for rice B varieties using Excel

Q: Chris tested a sample of 20 Brand A electronic engine control modules, and they lasted 48,560…

A: The sample mean and standard deviation for Brand A electronic engine control modules is;…

Q: For a random sample of  70  overweight men, the mean of the number of pounds that they were…

A: given data  n = 70 x¯ = 28 poundsσ = 3.8 poundsbest point estimate for population mean  = ?

Q: college football coach records the mean weight that his players can bench press as 275 pounds, with…

A: We have given that  Sample size n=30, mu=275,xbar=286,s=55 and alpha=0.01

Q: The results of a common standardized test used in psychology research is designed so that the…

A: Given Population mean = 140 Population standard deviation = 40 Score =X= 44

Q: What is the z-score for this raw score?

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Q: The heights of 18 year old men are normally distributed with a mean of 67 inches and a standard…

A: Given information- Population mean, µ = 67 inches Population standard deviation, σ = 3 inches We…

Q: A student researcher wants to determine whether the mean score in Mathematics of the 25 students in…

A: Confidence interval are used to measure the range where the true parameter lies. It measure the…

Q: A student takes a test in his math course and scores 45 points and a test in his psychology…

A: Introduction:Consider X as a normally distributed random variable, with mean μ and standard…

Q: Who has the larger dog relative to their breed?

A: It is given that For Golden Retriever, X = 70.2, mean = 67 and SD = 2.5 For St Bernard, X = 215,…

Q: A simple random sample of 36 observations was taken from a large population. The sample mean and the…

A:

Q: The results of a common standardized test used in psychology research is designed so that the…

A: From the provided information, Mean (µ) = 175 Standard deviation (σ) = 10 X~N (175, 10) Here X be a…

Q: before and after taking the drug. The sample mean blood pressure before taking the drug was 120 mmHg…

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Q: A luxury furniture manufacture will make custom furniture for their customers. Pricing is based on…

A: given data, normal distributionμ=280σ=40we have to find out the given probabilities

Q: A soccer player wants to estimate with 98% confidence the number of hours per week all high school…

A: Solution

Q: at one time had a height of 243 cm. The shortest living man at that time had a height of 127.5 cm.…

A: Concept: A z-score is known as the standard score that determines how much the data point deviates…

Q: survey reported that in a recent year, the mean serum cholesterol level in milligrams per deciliter…

A: μ = 204σ = 37n = 116Find 33rd percentile for x¯

Q: A recent study of 25 motorists showed that they spent an average of P750 per week. The standard…

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Q: A person in the U.S. eats about 25 pounds of M&M's per year with a standard deviation of 3 pounds.…

A: Assume that a person in the U.S. eats of M&M's per year follow normal distribution. μ=25σ=3 Let…

Q: 5 will be drawn from a population of test takers with a mean of 150 and standard deviation 9. Find…

A: Given that  Sample size (n) = 75 Population mean (μ) = 150 Standard deviation (σ) = 9   We know that…

Q: there are 75 students in the class and 20 students are getting a+ grade in the class find the mean…

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