2. David measures the weight of each student from his Math II class. He finds the mean weight is 62kg with a standard deviation of 3kg, and assumes the weight is normally distributed. (a) Sketch the distribution
Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
A: Let "X" be standardized exam scores.
Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
A: Let "X" be the exam scores.
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A: The mean test score is 1463 and standard deviation is 315. The z-score for 1860 is,…
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A: The mean is 1498 and the standard deviation is 312.
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Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
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Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
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Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
A: GivenMean(μ)=1451standard deviation(σ)=316
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Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
A: Consider a random variable X that denotes the test scores. Therefore , X~Nμ=1527,σ=315
Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
A: From the provided information,Mean (µ) = 1473Standard deviation (σ) = 315X~N (1473, 315)
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Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
A: From the given information, the standardized exam’s scores are normally distributed with mean is…
Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
A: normal distributionμ = 1490σ = 312
Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
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Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
A: The following information has been provided: Let X be random variable represents the standardized…
Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
A: Let "X" be the exam scores.
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A:
Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
A: Given information- Population Mean µ = 1474 Standard deviation (σ) = 319 Let X be the test scores of…
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- Every year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (high musical aptitude). This year's results are given in the frequency distribution: Aptitude Score 0 1 2 3 4 5 Frequency 1 6 4 1 5 2 Calculate the sample standard deviation of this data. Answer using two decimal places.The standard error of the mean is a Sample standard deviation b. Standard deviation of the population c.Standard deviation of the mean d.Standard deviation of the distribution of sample meansA standardized exam's scores are normally distributed. In a recent year, the mean test score was 1538 and the standard deviation was 314. The test scores of four students selected at random are 1970, 1280, 2260, and 1430. Find the z-scores that correspond to each value and determine whether any of the values are unusual. .... The z-score for 1970 is (Round to two decimal places as needed.) The z-score for 1280 is (Round to two decimal places as needed.) The z-score for 2260 is (Round to two decimal places as needed.) The z-score for 1430 is. (Round to two decimal places as needed.) Which values, if any, are unusual? Select the correct choice below and, if necessary, fill in the answer box within your choice. O A. The unusual value(s) is/are (Use a comma to separate answers as needed.) O B. None of the values are unusual.
- The distribution of heights in a population of women is approximately normal. Sixteen percent of the women have heights less than 62 inches. About 97.5% of the women have heights less than 71 inches. Use the empirical rule to estimate the mean and standard deviation of the heights in this population. Mean: K inches Standard Deviation: inchesA standardized exam's scores are normally distributed. In a recent year, the mean test score was 1511 and the standard deviation was 312. The test scores of four students selected at random are 1910, 1280, 2240, and 1420. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1910 is (Round to two decimal places as needed.) The z-score for 1280 is (Round to two decimal places as needed.) The Z-score for 2240 is (Round to two decimal places as needed.) The Z-score for 1420 is (Round to two decimal places as needed.) Which values, if any, are unusual? Select the correct choice below and, if necessary, fill in the answer box within your choice OA. The unusual value(s) is/are (Use a comma to separate answers as needed.) OB. None of the values are unusual.For a population that has a standard deviation of 22, figure the standard deviation of the distribution of means for samples of size (a)2, (b)4, (c)5 and (d)10.
- A population has a mean μ = 70 and a standard deviation o=36. Find the mean and standard deviation of a sampling distribution of sample means with sample size n = 81. H=(Simplify your answer.) = (Simplify your answer.)A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1539 and the standard deviation was 315. The test scores of four students selected at random are 1940, 1290, 2240, and 1420. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1940 is. (Round to two decimal places as needed.) The Z-score for 1290 is. (Round to two decimal places as needed.) The Z-score for 2240 is. (Round to two decimal places as needed.) The Z-score for 1420 is. (Round to two decimal places as needed.) Which values, if any, are unusual? Select the correct choice below and, if necessary, fill in the answer box within your choice. OA. The unusual value(s) is/are. CD (Use a comma to separate answers as needed.) OB. None of the values are unusual.A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1458 and the standard deviation was 312. The test scores of four students selected at random are 1860, 1220, 2150, and 1340. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1860 is (Round to two decimal plaes as needed.)
- Find the variance and standard deviation. Round the variance to two decimal places and standard deviation to at least three decimal places.Renee scores an average of 198 points in a game of bowling, and the points are normally distributed. Suppose Renee scores 224 points in a game and this value has a z-score of 2. What is the standard deviation? Provide your answer below: pointsA standardized exam's scores are normally distributed. In a recent year, the mean test score was 1506 and the standard deviation was 317. The test scores of four students selected at random are 1940, 1230, 2190, and 1400. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1940 is. (Round to two decimal places as needed.)