that the standard deviation of the distribution of times that Americans spent watching television in 2019 is 285.20 hours. Using Chebyshev's theorem, find the interval that will contain the television viewing times of at least 75% of all Americans. Enter the exact answers. From i hours to i hours.

Q: Suppose that the mean systolic blood pressure for women over age seventy is 131 mmHg (millimeters of…

A: Given that the mean systolic blood pressure of women over age seventy is 131mmHg with a standard…

Q: Use Chebyshev’s Theorem for: Americans spend an average of 3 hours per day online. If the standard…

A: Given Information: Mean = 3 hours = 180 minutes Standard deviation = 28 minutes To find the interval…

Q: An auditor finds that the values of a corporation’s accounts receivable have a mean of $295 and a…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Q: Use the tatile to find the value that is three standard deviations above and below the mean, (Enter…

A: (a) The values 3 standard deviations above the mean here are obtained as  :  Fredo's Team: M + 3*SD…

Q: Twelve percent of the world's population is left-handed. A researcher daims that left-handed…

A: Solution: From the given information, the out of 1650 artists 10% are left-handed. The population…

Q: A sample of the number of sick days used by employees at a clinic is as indicated: 0,    0,    1,…

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Q: Suppose that the lengths of human pregnancies are normally distributed with a mean of 266 days and a…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: Suppose that the lengths of human pregnancies are normally distributed with a mean of 266 days and a…

A: a) Empirical rule: The probability of the observation lies within 1 standard deviation of the mean,…

Q: Use Z scores to compare the given values The tallest living man at one time had a height of 245cm.…

A:

Q: Suppose that the mean systolic blood pressure for women over age seventy is 131 mmHg (millimeters of…

A: Given data: Mean =131 Standard deviation = 7

Q: After surveying 625 potential voters polled, you find out that 325 support candidate X and 300…

A: Given information: A total sample of 625 potential voters. 325 out of 625 support candidate X. 300…

Q: In a mango farm of 250 trees, the mean harvest is 96.5 kilos of fruit per tree with a standard…

A: Given,sample size(n)=250mean(μ)=96.5standard deviation(σ)=8.4

Q: Here are the number of hours that each of a group of students studied for this exam: 2 4 22 2 1 4 1…

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Q: 3. A researcher of a cardboard manufacturing company would like to know the of the cardboard machine…

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Q: Is it possible for the standard deviation of a list of numbers to equal 0? If so, give an example.…

A: Standard deviation refers to the spread in the data set. If the standard deviation equals zero, it…

Q: Suppose that the lengths of human pregnancies are normally distributed with a mean of 266 days and a…

A: GivenMean(μ)=266standard deviation(σ)=17

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A: The sample mean is 69.9 bpm and the standard deviation is 11.1.

Q: The mean difference equals 1.2, the standard deviation of the difference equals 1.5, and n equals…

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Q: n pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random sample of 164…

A: As the population standard deviation is not known, we will use t distribution.

Q: a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 34 beats per…

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Q: The Malaysian Environmental Protection Agency publishes figures on solid waste generation in…

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Q: Assume that women's weights are normally distributed with a mean given by ?=143 lb and a standard…

A: We have to find probability using z table.

Q: Suppose that the mean systolic blood pressure for women over age seventy is 131 mmHg (millimeters of…

A: According to the given information, we have Mean = 131 and Standard deviation = 9

Q: Assume that women's weights are normally distributed with a mean given by mean=143 lb and a standard…

A:

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A: Given data mean=69.0 inches standard deviation=2.8 inches x=79.7 inches

Q: In an entrance test of 200 students, the mean score was 60 with a standard deviation of 8. Assuming…

A:

Q: Suppose that the lengths of human pregnancies are normally distributed with a mean of 268 days and a…

A:

Q: t is known that the average time required to complete a test exam is 80 minutes and the standard…

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Q: How many of the people surveyed will have a weight between 130 and 140lbs?

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Q: The mean of fifty sales receipts is $65.75 and the standard deviation is $10.55. Using Chebyshev’s…

A: Here, The mean of fifty sales receipts is $65.75 and the standard deviation is $10.55. Chebyshev’s…

Q: A test consists of 980 true or false questions. If the student guesses on each question, what is the…

A:

Q: The average driver spends $54 at the gas station each week with a standard deviation of $8. Assuming…

A:

Q: If the mean score on a math quiz is 12.6 and 38.2​% of the students in your class scored between…

A: Mean = 12.6 area between 11.1 and 14.1 is 38.2%

Q: Suppose that the mean systolic blood pressure for women over age seventy is 132 mmHg (millimeters of…

A: Given mu =132 , sigma = 7 ( a )P ( 125<X<139 ) =? % ( B ) 99.7% lies between ? and ?

Q: a survey by the national retail federation found that women spend on average $130.71 for the…

A: If the distribution follows normal with population mean, μ and standard deviation, σ then the…

Q: The mean age of clients at a local nail salon is 33.9 years. If 7.21% of the clients are older than…

A:

Q: Suppose that the lengths of human pregnancies are normally distributed with a mean of 268 days and a…

A: Explained below

Q: Suppose that the lengths of human pregnancies are normally distributed with a mean of 267 days and a…

A:

Q: are all equal. 3. If a set of grades for a class has a large range and a small standard deviation,…

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Q: A test consists of 260 true or false questions. If the student guesses on each question, what is the…

A: Binomial distribution: A discrete r.v. X taking values 0,1,2,3, …., n is said to follow a binomial…

Q: Suppose you have already calculated the mean, the average deviation, and the standard deviation of…

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Q: Ten percent of the world's population is left-handed. A researcher claims that left-handed…

A: Given: n=900 and p=9%=0.09. a) The mean of p^ is μp^=p=0.09

Q: In a test, the average of the grades is 80 and the standard deviation is 5. John's grade is 70, so…

A:

Q: One thousand students took a test resulting in a normal distribution of the scores with a mean of 80…

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Q: In a Calculus test, the mean score is 42 and the standard deviation is 5. Assuming the scores are…

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Q: In a recent​ year, the mean test score was 1539 1539 and the standard deviation was 310 310. The…

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Q: Use z scores to compare the given values. The tallest living man at one time had a height of 245 cm.…

A:

Q: The mean weight of 1000 students at a certain high school is 140 pounds and the standard deviation…

A: Assuming that the weights are normally distributed.

Q: Sixteen percent of the world's population is left-handed. A researcher claims that left-handed…

A: a) mean (p) = 0.16 , q = 1 - 0.16 = 0.84 , n =2100