https://www.webassign.net/web/Student/Assignment-Responses/submit?dep=29439505&tags=autosave#question4647930_3Points]DETAILSPREVIOUS ANSWERSODonie is a personnel manager in a large corporation. Each month she must review 16 of the employees. From past experience, she has found that the rewours each to do with a population standard deviation of 1.2 hours. Let X be the random variable representing the time it takes her to complete one reviewHistributed. Let X be the random variable representing the mean time to complete the 16 reviews. Assume that the 16 reviews represent a random set of reFind the probability that the mean of a month's reviews will take Yoonie from 3.5 to 4.25 hrs.(a) Sketch the graph, labeling and scaling the horizontal axis. Shade the region corresponding to the probability.0.4 1.6 2.8ILLOWSKYINTROSTATT 7.1.004.PK.0.4 1.6 2.84 5.2 6.4 7.6 Dent/Assignment-Responses/submit?dep=29439505&tags-autosave#question4647930_3Yoonie is a personnel manager in a large corporation. Each month she must review 16 of the employees. From past experience, she has found thahours each to do with a population standard deviation of 1.2 hours. Let X be the random variable representing the time it takes her to complete ordistributed. Let X be the random variable representing the mean time to complete the 16 reviews. Assume that the 16 reviews represent a randomFind the probability that the mean of a month's reviews will take Yoonie from 3.5 to 4.25 hrs.(a) Sketch the graph, labeling and scaling the horizontal axis. Shade the region corresponding to the probability.O0.4 1.6 2.8 4 5.2 6.4 7.60.4 1.6 2.84 5.2 6.4 7.6

The graph for the probability that the mean of a month's reviews will take Yoonie from 3.5 to 4.25…

Answered: onie is a personnel manager in a large…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Suppose the average amount of money that people spend on their pets per month is 47 dollars, with a standard deviation of 6 dollars. For a sample of 36 people, final the average amount of money spent on pets that defines the bottom 30% in the distribution.For a sample of 36 people, what is the probability for this sample’s mean to be higher than 50 dollars.
A professor of statistics noticed that the marks in his course are normally distributed. He also noticed that his morning classes average 73% with a standard deviation of 12% on their final exams. His afternoon classes average 79% with a standard deviation of 11%. A. What is the probability that a randomly selected student in the morning class has a higher final exam mark than a randomly selected student from an afternoon class? Probability = B. What is the probability that the mean mark of four randomly selected students from a morning class is greater than the average mark of four randomly selected students from an afternoon class? Probability =
Yoonie is a personnel manager in a large corporation. Each month she must review 10 of the employees. From past experience, she has found that the reviews take her approximately 4 hours each to do with a population standard deviation of 1.1 hours. Let X be the random variable representing the time it takes her to complete one review. Assume X is normally distributed. Let X¯¯¯ be the random variable representing the mean time to complete the 10 reviews. Assume that the 10 reviews represent a random set of reviews. (a) What is the mean, standard deviation, and sample size? Mean = Standard Deviation = Sample Size = (b) Complete the distributions. Round all decimals to four decimal places. X∼ ( Number, Number) X¯¯¯∼ ( Number, Number)
A company that supplies LP gas for heating keeps data on the low temperature for each day of each month. It sum-marizes these data by finding the mean, median, standard deviation and interquartile range. The company assumesthat people use the LP gas for heat when the temperature is below 70°, so it creates a second set of data by subtract-ing 70 from each daily low temperature. Which of the four summary statistics will change for this second data set?A) mean and median onlyB) mean and standard deviation onlyC) median and IQR onlyD) standard deviation and IQR onlyE) mean, median, standard deviation, and IQR
JA researcher takes an SRS of 80 people who go golfing.The average to be u52 years old. It was also determined that the standard deviation of cac ot golfers was la What is the probability that the sample mean is kss. than 47 years old? age of all golferswas determined years.
Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the standard deviation is 5. What is the probability of selecting a person with a score greater than Cody’s?
A study found that there was 48% chance that the driver fails a breathalyzer test when it is administered on a Friday night. The test is administered to 80 drivers. What distribution that can be used to model the above situation. How many drivers do we expect to fail the test
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Justin and Robbie are golfers. The distribution of Justin's golf scores has a mean of 225 and a standard deviation of 25. Robbie's golf score distribution has a mean of 240 and a standard deviation of 15. Both distributions are approximately normal and they are completely independent of each other. What is the closest probability that Justin will have a higher golf score than Robbie in a randomly selected golf round?
In a recent year, the mean test score was 1539 1539 and the standard deviation was 310 310. The test scores of four students selected at random are 1950 1950, 1300 1300, 2270 2270, and 1430 1430. Find the z-scores that correspond to each value and determine whether any of the values are unusual
Dan is doing research on organic farming for an agricultural foundation. He has collected data on the number of oranges harvested from individual trees in two different orchards. In each orchard, the number of oranges harvested from each of 57 trees was recorded. The histograms below show the distributions of the two data sets. The means and standard deviations for the data sets are also given. Orchard 1 Orchard 2 25 25 20- 20- 15+ 15- 10+ 10+ 5+ 5+ 199.5 219.5 239.5 259.5 279.5 299.5 319.5 339.5 359.5 199.5 219.5 239.5 259.5 279.5 299.5 319.5 339.5 359.5 Orchard 1 mean: 275.1 oranges Orchard 2 mean: 274.9 oranges Orchard 1 standard deviation: 23.2 oranges Orchard 2 standard deviation: 47.9 oranges Dan wants to use the Empirical Rule to make some approximations about both data sets. Unfortunately, it is appropriate to use the Empirical Rule on only one of them! Answer the parts below to help Dan with his approximations. (a) Identify the data set for which it is appropriate to use the…

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