A population of values has a normal distribution with u = 94.8 and o = 16. You intend to draw a randomsample of sizen = 76.Find the probability that a sample of size n = 76 is randomly selected with a mean greater than 100.3.P(M > 100.3) =Enter your answers as numbers accurate to 4 decimal places. Answers obtained using exact z-scores or z-Scores rounded to 3 decimal places are accepted.Submit Question%&34.79.ey00%24CU

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Answered: A population of values has a normal…

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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Determine the sample mean, sample variance, and sample standard deviation
A population of values has a normal distribution with u = 36 and o = 31.3. You intend to draw a random sample of size n = 12. Please answer the following questions, and show your answers to 1 decimal place. Find the value separating the bottom 11% values from the top 89% values. Find the sample mean separating the bottom 11% sample means from the top 89% sample means.
Assume a normal distribution tus u 80 and o 10. What is the probability of randomly selecting a score greater than 90 from this distribution? Op-0.6915 Op-0.1587 Op-0.8413 Op-03085
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…
About 23% of a population are of a particular ethnic group.240 people are randomly selected from this population.Round all answers to 3 decimal places.Convert the percentage of the population to a decimal:p: Compute the mean and standard of this size sample of this binomial distribution:Mean: Standard deviation:
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). 95 86 80 103 99 110 82 87 The sample mean is x = 92.8. 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 o = 12.5. The mean glucose level for horses should be u = 85 mg/100 ml.t Do these data indicate that Gentle Ben has an overall average glucose level higher than 85? Use a = 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? O Ho: H = 85; H,: µ + 85; two-tailed O Ho: H = 85; H,: µ > 85; right-tailed O Ho: H = 85; H,: u 85; H,: u = 85; right-tailed (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution. O The standard normal, since we assume that x has a normal…
A population of values has a normal distribution with mean 191.4 and standard deviation of 69.7. A random sample of size n = 153 is drawn. A. Find the probability that a single randomly selected value is between 188 and 206.6 round your answer to four decimal places. P=______________ B. Find the probability that a sample of size n=153 is randomly selected with a mean between 188 and 206.6. Round your answer to four decimal places. P=________________
Assume the random variable X is normally distributed with mean = 50 and standard deviation σ = 7. Find the 77th percentile. Click the icon to view a table of areas under the normal curve. The 77th percentile is (Round to two decimal places as needed.) n example Get more help - Clear all Check answer
A study investigating the relationship between a country's annual gross domestic product x (in trillions of dollars) and carbon dioxide emissions y(in millions of metric tons) yielded r = 0.87, se = 141.9 , and the regression equation y-hat = 199.5x + 56.0. For each additional trillion dollars in %3D gross domestic product, carbon dioxide emissions increases by about 0.87 million metric tons, on average increases by about 199.5 million metric tons, on average changes by an amount that cannot be determined from the information given O increases by about 141.9 million metric tons, on average increases by about 56.0 million metric tons, on average
Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value tα/2, (b) find the critical value zα/2, or (c) state that neither the normal distribution nor the t distribution applies.The confidence level is 95%, σ is not known, and the histogram of 52 player salaries (in thousands of dollars) of football players on a team is as shown. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.A.tα/2=(Round to two decimal places as needed.)B.zα/2=(Round to two decimal places as needed.) C.Neither the normal distribution nor the t distribution applies.
Find the Z scores for which 90% of the distributions area lies between -z and z 1) -1.96 ,1.96 2) -0.99 ,0.99 3) -1.645, 1.645 4) -2.33, 2.33 select the correct answer
stat 2b

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