Suppose that X has a discrete uniform distribution on the integers 0 through 9. Determine the mean, variance, and standard deviationof the random variable Y = 6X.The mean isi[Round your answer to one decimal place (e.g. 98.7).]The variance is i[Round your answer to two decimal places (e.g. 98.76).]The standard deviation is i[Round your answer to two decimal places (e.g. 98.76).]Statistical Tables and Charts

Answered: Image /qna-images/answer/bad2be59-6de7-4fc0-b1e3-a2e3fbe1053b.jpg

Answered: Suppose that X has a discrete uniform…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Gentle Ben is a Morgan horse at a Colorado dude ranch. Over the past 8 weeks, a veterinarian took the following glucose readings from this horse (in mg/100 ml). 92 90 80 103 97 112 83 89 The sample mean is x ≈ 93.3. Let x be a random variable representing glucose readings taken from Gentle Ben. We may assume that x has a normal distribution, and we know from past experience that ? = 12.5. The mean glucose level for horses should be ? = 85 mg/100 ml.† Do these data indicate that Gentle Ben has an overall average glucose level higher than 85? Use ? = 0.05. (a) What is the level of significance?State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? H0: ? = 85; H1: ? < 85; left-tailedH0: ? = 85; H1: ? ≠ 85; two-tailed H0: ? > 85; H1: ? = 85; right-tailedH0: ? = 85; H1: ? > 85; right-tailed (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution. The Student's t, since n…
Assume that you have been provided the following information for a sample of cars The covariance between weight and miles per gallon is equal to -4.0 pound-miles. The standard deviation of the cars' mileages is 7.74. The standard deviation of the cars' weights is 0.79. Estimate the correlation coefficient to the first decimal place.
Assume that you have been provided the following information for a sample of cars The covariance between weight and miles per gallon is equal to -4.1 pound-miles. The standard deviation of the cars' mileages is 7.20. The standard deviation of the cars' weights is 0.73. Estimate the correlation coefficient to the first decimal place.
Internet Service Providers The amount that households pay service providers for access to the Internet varies quite a bit, but the mean monthly fee is $50 and the standard deviation is $20. The distribution is not Normal: many households pay a low rate as part of a bundle with phone or television service, but some pay much more for Internet only or for faster connections. A sample survey asks an SRS of 50 households with Internet access how much they pay. Let x be the mean amount paid. 1. Explain why you can't determine the probability that the amount a randomly selected household pays for access to the Internet exceeds $55. 2. What are the mean and standard deviation of the sampling distribution of x ? 3. What is the shape of the sampling distribution of x ? Justify your answer. 4. Find the probability that the average fee paid by the sample of households exceeds $55.
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The weight of a loaf of bakery bread at the grocery store follows a Normal distribution with a mean of μ = 12 ounces and a standard deviation of σ = 1 ounce. Suppose we pick four loaves at random from the bin and find their total weight, W. Which of the following statements describes the random variable W? O The random variable W is binomial, with a mean of 48 ounces and a standard deviation of two ounces. O The random variable W is binomial, with a mean of 12 ounces and a standard deviation of two ounces. O The random variable W is Normal, with a mean of 12 ounces and a standard deviation of one ounce. O The random variable W is Normal, with a mean of 48 ounces and a standard deviation of two ounces. O The random variable W is Normal, with a mean of 48 ounces and a standard deviation of four ounces.
A radar unit is used to measure the speed of cars at NLEX. NLEX records show that the measures of speed are normally distributed with a mean of 95 km/hr and a standard deviation of 14 km/hr. The probability that a car picked at random is travelling between 75 and 135 km/hr is Blank 1. Round of answers in four (4) decimal places (decimal form).
Gentle Ben is a Morgan horse at a Colorado dude ranch. Over the past 8 weeks, a veterinarian took the following glucose readings from this horse (in mg/100 ml). 91 86 80 107 99 108 86 89 The sample mean is x ≈ 93.3. Let x be a random variable representing glucose readings taken from Gentle Ben. We may assume that x has a normal distribution, and we know from past experience that ? = 12.5. The mean glucose level for horses should be ? = 85 mg/100 ml.† Do these data indicate that Gentle Ben has an overall average glucose level higher than 85? Use ? = 0.05. (a) What is the level of significance? b. (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution. The Student's t, since we assume that x has a normal distribution with known ?.The Student's t, since n is large with unknown ?. The standard normal, since we assume that x has a normal distribution with unknown ?.The standard normal, since we assume that x has a normal…
The following table gives the frequency distribution of the number of errors committed by a college baseball team in all of the 47 games that it played during the 2011-12 season. Number of Errors Number of Games 0 11 1 16 2 9 3 7 4 3 5 1 Find the mean, variance, and standard deviation. (Hint: The classes in this example are single valued. These values of classes will be used as values of m in the formulas for the mean, variance, and standard deviation.)Round your answers to two decimal places. Mean = Enter you answer; Mean errors Variance = Enter you answer; Variance Standard deviation = Enter you answer; Standard deviation errors
Gentle Ben is a Morgan horse at a Colorado dude ranch. Over the past 8 weeks, a veterinarian took the following glucose readings from this horse (in mg/100 ml). 91 88 82 103 97 108 84 91 The sample mean is x ≈ 93.0. Let x be a random variable representing glucose readings taken from Gentle Ben. We may assume that x has a normal distribution, and we know from past experience that ? = 12.5. The mean glucose level for horses should be ? = 85 mg/100 ml.† Do these data indicate that Gentle Ben has an overall average glucose level higher than 85? Use ? = 0.05. (a) What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? H0: ? = 85; H1: ? > 85; right-tailed H0: ? > 85; H1: ? = 85; right-tailed H0: ? = 85; H1: ? ≠ 85; two-tailed H0: ? = 85; H1: ? < 85; left-tailed (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution.…
The standard deviation of a discrete random variableo is the positive square root of its: O a. median. O b. mean. O c. variance. O d. mode. NE DUS PAGE
Gentle Ben is a Morgan horse at a Colorado dude ranch. Over the past 8 weeks, a veterinarian took the following glucose readings from this horse (in mg/100 ml). 91 88 80 103 97 110 86 89 The sample mean is x ≈ 93.0. Let x be a random variable representing glucose readings taken from Gentle Ben. We may assume that x has a normal distribution, and we know from past experience that ? = 12.5. The mean glucose level for horses should be ? = 85 mg/100 ml.† Do these data indicate that Gentle Ben has an overall average glucose level higher than 85? Use ? = 0.05. (a)What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? H0: ? > 85; H1: ? = 85; right-tailed H0: ? = 85; H1: ? < 85; left-tailed H0: ? = 85; H1: ? ≠ 85; two-tailed H0: ? = 85; H1: ? > 85; right-tailed (b)What sampling distribution will you use? Explain the rationale for your choice of sampling distribution. The…

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