A nutritionist claims that the mean tuna consumption by a person is 3.2 pounds per year. A sample of 80 people shows that the mean tuna consumption by a person is 2.9 pounds per year. Assume the population standard deviation is 1.23 pounds. At α=0.07​, can you reject the​

Q: nutritionist claims that the mean tuna consumption by a person is 3.1 pounds per year. A sample of…

A: From the provided information, Sample size (n) = 70 Sample mean (x̅) = 2.9 Population standard…

Q: A sample has a mean M = 55. In the sample, a score of X = 48 corresponds to z = -1.20. What is the…

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Q: In a sample of12randomly selected high school​ seniors, the mean score on a standardized test…

A: We have given thatSample size (n) = 12Sample mean (x̅) = 1193Standard deviations (s) = 168.9…

Q: The standard deviation of the residuals is s=5.9. Interpret the value in context.

A: The residual standard deviation 's' is the difference between set of observed and predicted values.…

Q: Assume that a randomly selected subject is given a bone density test. Bone density test scores are…

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Q: The amount of advertising per hour of broadcast time has an average of 17 minutes and a standard…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of 98.7 and a standard…

A: Given data, μ=98.7σ=16.2P(X<x)=25%x=?

Q: A nutritionist claims that the mean tuna consumption by a person is 3.1 pounds per year. A sample…

A: Solution: Let X be the tuna consumption by a person. From the given information, n=90, x-bar=2.9 and…

Q: A population of scores has μ = 80. In this population, a score of X= 92 corresponds to z = 5. what…

A: Given: μ = 80 z = 5 X= 92

Q: You should do the test with Z rather than t when The numbers are sampled from a normal distribution.…

A: We should use Z rather than t, when we have- When the population standard deviation is known. And…

Q: sample has a mean M = 89. In the sample, a score of X = 6 corresponds to z = 2. What is the standard…

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Q: The standard deviation of the fuel consumption of a certain car is hypothesized to be equal to 1.72…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: A nutritionist claims that the mean tuna consumption by a person is 3.8 pounds per year. A sample…

A: The summary of statistics is, x¯=3.6,σ=1.16,n=50 The null and alternative hypothesis is, H0​: μ=3.8…

Q: IQ scores are normally distributed with a mean of 100 and standard deviation of 15. Compute the z…

A: Z score formula has used

Q: A sample has a mean M = 55. In the sample, a score of X = 48 corresponds to z = -1.50. What is the…

A:

Q: Tennis Fans The Tennis Industry Association stated that the average age of a tennis fan is 32 years.…

A: Given:  Population average μ=32 years Sample size n=18 Sample average x¯=31.3 years  Sample SD s=…

Q: A population has a mean  u=21 and standard deviation o=11 Find the z-score for a population value of…

A: Given, x = 40 μ = 21σ = 11

Q: A nutritionist claims that the mean tuna consumption by a person is 3.6 pounds per year. A sample of…

A: Given, A nutritionist claims that the mean tuna consumption by a person is 3.6 pounds per year. A…

Q: Low Gas Mileage. Suppose you buy a new car whose advertised mileage is 25 miles per gallon (mpg).…

A: a. The mean gasmileage of the car is 25 miles per gallon and the standard deviation is 1.15 mpg. The…

Q: A nutritionist claims that the mean tuna consumption by a person is 3.3 pounds per year. A sample of…

A: Given,   Sample size = 70 Sample mean = 3.1 Population standard deviation = 1.14

Q: Compute the standard score (Z-score) for x, when x = 42, the mean of the distribution = 26, and the…

A: x = 42Mean = 26Standard deviation = 8

Q: Test the hypothesis (using z-test) of each of the following situations. Show complete steps.  An…

A: From the provided information, Sample size (n) = 45 Sample mean (x̄) = 4.62 Standard deviation (s) =…

Q: a population of scores has u=44. in this population a score of x=40 corresponds to z = -1.00. What…

A: We have given that, Population mean (u) = 44, raw score of population (X) = 40 and z- score = -1. 00…

Q: A population of scores has µ=44. In this population, a score of X= 40 corresponds to z= - 0. 50.…

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Q: The average American consumes 91 liters of alcohol per year. Does the average college student…

A: Consider that μ is the population mean alcohol consumption.

Q: A nutritionist claims that the mean tuna consumption by a person is 3.3 pounds per year. A sample of…

A: (a) Let μ denotes the population mean tuna consumption. The claim of the test is that the mean tuna…

Q: A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1026 h with a…

A: Given, Mean life span of 1026 h and standard deviation 86 h.

Q: At α=0.03​, can you reject the​ claim? ​(a) Identify the null hypothesis and alternative…

A:

Q: Assume that a randomly selected subject is given a bone density test. Bone density test scores are…

A: Assume that a randomly selected subject is given a bone density test. Bone density test scores are…

Q: In a sample of 12 randomly selected high school​ seniors, the mean score on a standardized test was…

A: From the provided information, Sample size (n) = 12 Sample mean (x̅) = 1182 Sample standard…

Q: Find the F-test statistic to test the claim that the population variances are equal. Both…

A: Given : Claim : Population variances are equal  Both distribution are normal Standard deviation of…

Q: A nutritionist claims that the mean tuna consumption by a person is 3.6 pounds per year. A sample…

A: Given that  Claim :  Mean tuna consumption by a person is 3.6 pounds per year Sample size (n) = 90…

Q: A nutritionist claims that the mean tuna consumption by a person is 3.3 pounds per year. A sample of…

A: GivenMean(x)=3.1standard deviation(σ)=1.02sample size(n)=80significance level(α)=0.06

Q: The standard deviation of the fuel consumption of a certain automobile is hypothesized to be greater…

A:

Q: A population of score has μ  = 44. in this population, a score of X = 40 corresponds to z = -0.50.…

A: