According to the researchers, the human experiment for salt is 220 mg per day which surpassed in most single servings of ready to eat burgers. If a random sample of 20 hamburgers has a mean sodium content of 244 mg of sodium and a Standard Deviation of 24.5 mg. Does this suggest that the average sodium content for single servings of hamburger is greater than 220 mg?

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A: Here, we can consider that it is Binomial distribution because  80% of people has lung cancer and…

Q: The amount of coffee dispensed by a vending machine is assumed to be normally distributed. A vendor…

A: Randomly selected thirty-six cups of coffee; n=36 μ=6x=5.8σ=0.8

Q: The Pew Internet and American Life Project surveyed 2227 adults in 2011, asking them about their…

A: It is given that the mean number of text messages sent per day is 40.9 for men, 42.0 for women. The…

Q: The amount of coffee dispensed by a vending machine is assumed to be normally distributed. A vendor…

A: Here's mean is 5.8 and standard deviation is 0.8. Sample number is 36 and population mean is 6. We…

Q: Which of these two men had the height that was more​ extreme

A: Let , X : height of the tallest man and Y : height of the shortest man Since , the distribution of…

Q: Imagine that every elementary school in California is measured on several characteristics and then…

A: For Carver:mean(μ)=10.1standard deviation(σ)=2.3and score (X)=13.2For Bryant:mean(μ)=9.8standard…

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A: 68-95-99.7-rule: Let X be an observation from a normal distribution, having mean µ and standard…

Q: At Northwest Nursing School, the average score a student must make on and entrance exam is 142…

A: The objective of this question is to find the cutoff score that a nurse must make to be considered…

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A: The given information is: For females,  Sample sizen1=142 Sample meanx¯1=68.3 Sample standard…

Q: It seems these days that college graduates who are employed full-time work more than 40 -hour weeks.…

A: From the provided information, Population mean (µ) = 40 hours Sample size (n) = 19 Sample mean (x̅)…

Q: The mean and standard deviation of hemoglobin level of 23 vibrant students and 21 school children…

A: We have to test claim.

Q: According to National Health Survey heights of men are normally distributed with mean of μ=69.0…

A: The standard deviation is obtained below Critical value: From the standard normal distribution…

Q: It seems these days that college graduates who are employed full-time work more than 40-hour weeks.…

A:

Q: It seems these days that college graduates who are employed full-time work more than 40 -hour…

A: Given information- Population mean, μ = 40 Sample size, n = 19 Sample mean, x-bar = 44 Sample…

Q: A vending machine is designed to dispense a mean of 7.8 oz of coffee into an​ 8-oz cup. If the…

A: Let X be the random variable from Normal distribution with mean (μ) = 7.8 and standard deviation (σ)…

Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

A: Givenaverage length of trout caught in Pyramid Lake is μ = 20 inches.Sample size = 37sample mean =…

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

A: Consider X be a random variable which follows normal distribution indicating the score earned on a…

Q: A doctor is researching the proper dosage for a patient’s cholesterol medication. The dosage of the…

A:

Q: The mean gas mileage for a hybrid car is 57 miles per gallon. Suppose that the gasoline mileage is…

A:

Q: Suppose that prices of recently sold homes in one neighborhood have a mean of $265,000 with a…

A: For the distribution of the price of the recently sold homes, the parameters are specified as…

Q: The SAT and ACT are standardized tests for college admission in the United States. Both tests…

A: Percentile of Sam's score is given by the cumulative probability of observing a score of at least…

Q: A factory makes headache tablets. Each tablet is supposed to weigh 250mg. If a tablet weighs less…

A:

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 262 days…

A: Let "X" be the lengths of pregnancies in a small rural village in days.

Q: In a recent awards ceremony the age of the winner for the best actor award was 34 and the age of the…

A:

Q: A set of math test scores has a mean of 70 and a standard deviation of 8.  A set of English test…

A: Consider that the mean and standard deviation of a random variable x are µ and σ, respectively.…

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A: Let X: The cholesterol level for women in the United States. We know, X be normally distributed…

Q: ifty refrigerators from two different models of a refrigerator manufacturer are compared to see if…

A: Hypothesis testing plays a major role in research and development. To diagnose the underlying cause…

Q: A student earned a 75 on a calculus exam, and she earned a 68 on a linear algebra exam. The calculus…

A:

Q: The sample mean was 5.8 ounces with a standard deviation of 0.8 ounces. Do the data provide…

A: Given ; The amount of coffee dispensed by a vending machine is assumed to be normally distributed. A…

Q: In Professor Krugman’s economics course, the correlation between the students’ total scores prior to…

A: a)   The equation of the line is y=143.2608+1.344x and it is obtained below:   From the given…

Q: An instructor in a large lecture class found, at the end of the semester, that the total point…

A: The provided information is:

Q: Give two situations in which comparing two population standard deviations would be important

A: Two situations in which comparing two population standard deviations would be important is obtained…

Q: The scores on a marketing exam were normally distributed with a mean of 67 and a standard deviation…

A: Given data normally distributed with mean (μ) =67, standard deviation (σ) =9.Let ‘X’ be a normal…

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A:

Q: During 1 week, an overnight delivery company found that the weights of its parcels were normally…

A: A normal distribution is called a standard distribution if; 1. 68% of the values of the random…

Q: It seems these days that college graduates who are employed full-time work more than 40-hour weeks.…

A: Given data is appropriate for testing of hypothesis to test t-test for single mean. because it is a…

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A: Given Information: The random sample of size from farm A, n1=50 The sample mean of peas per pod in…

Q: It seems these days that college graduates who are employed full-time work more than 40-hour weeks.…

A: We have to test claim.

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A: Denote μ as the population mean weight of male turtles.   The claim is that the mean weight of male…

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

A: