If Elson's z-score on post-assessment is -3, the mean is 10 and the standard deviation is 2, what was his raw score? A. 4 B. 12 C. 16 D. 20

Q: Women's heights are normally distributed with mean 63.8in and standard deviation 2.6in. The U.S.…

A: Given that the men heights are normally distributed with mean 69.5 in and standard deviation 2.4…

Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

A: Given:  This lake is famous for cutthroat trout. A friend tells you that the average length of trout…

Q: You are interested in whether or not two measures of children behaviour  are equlvalent. The…

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Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

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Q: minimum shoulder girth is 87 cm and the maximum shoulder girth is 134 cm. The mean shoulder girth is…

A: Solution: Given information:  Let x = Shoulder girth and y= height  x = 108.87sx=10.12y= 173.86 sy=…

Q: Suppose the exam average in a class is 82% with a standard deviation of 6. What proportion of…

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Q: What is the z score for 20 if mean =28 and stadnard deviation =6

A: The z-score of a random variable x is defined as follows: z = (x – µ)/σ. Here, µ and σ are the mean…

Q: what percent of values fall between 5.25 and 8.75 if the mean =9 and standard deviation =2.36

A: Answer: From the given data, Mean (μ) = 9 Standard deviation (σ) = 2.36 X follows normal…

Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

Q: aul received a score of 79 on a history test for which the class mean was 70 with a standard…

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Q: In an examination, the mean grade is 81 and the standard deviation is 6. Find the Z-score of the…

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Q: The average monthly salary for newly - hired teachers is P21,945. If the distribution is…

A: Given that. 4) X~N( μ , ?)   μ=21945 , ?=3250 , z=1.15   Z-score =( x - μ )/?

Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

A: Determine the level of significance.   Significance level:    In order to decide how small the…

Q: If the main level of snowfall for Boston Massachusetts is 44 inches per year and the standard…

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Q: Tom scored a 117 on a measure of math ability and a 41 on a measure of verbal ability. The means and…

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Q: Assume the cholesterol levels of adult American women can be described by a Normal model with a mean…

A: According to the given information, we have Mean = 188 mg/dL Standard deviation = 24 mg/dL

Q: 6. The three data sets have the same mean and range, but is the variation the same? Prove your…

A: We have to find the steps of three different data setLet us consider the first data set1) Ste 1:…

Q: Given the mean of a normally distributed data set is 25, with  standard deviation of 5, what percent…

A: We will standardize the normal variable and then use standard Normal table to find the required.

Q: 20. For the data in the following sample: 10, 6, 8, 6, a. Find the mean and the standard deviation.…

A: 20. a. The mean of the sample is, x¯=∑ixin=10+6+8+6+55=355=7 Thus, the mean of the sample is 7. The…

Q: Calculate the means and standard deviations of:1, 2, 3, 4, 5 a. O mean = 3; st. dev. = 1.414 O b.…

A: GIVEN DATA ,1,2,3,4,5HERE WE HAVE TO FIND OUT THE MEAN AND STANDARD DEVIATION FOR GIVEN DATA SCORE…

Q: For a population with a mean of 75 and a standard deviation of 4, find the Z Score for an X Score of…

A: Given,population mean(μ)=75population standard deviation(σ)=4Raw score(X)=73

Q: What is the mean absolute deviation of 5 scores if their deviation from the mean are 6, -5, 4, 3 and…

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Q: Suppose that the mean of a set of data is 50.2 and the standard deviation is 4.2.  Assume that the…

A: Given  μ=50.2, σ=4.2, h=5.1  We want to find the new mean and standard deviation.

Q: Look at your height, either on your Driver's License or ID card or actually measured. Calculate the…

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Q: Lucy got a score of 75 from her statistics class. Assuming the scores of her class formed a normal…

A: a. The pth percentile of a set of observations is the value below which, p% or (p/100) proportion of…

Q: n Professor Krugman's economics course, the correlation between the students' total scores prior to…

A: Solution: Given information:  Let x= The pre‑exam totals  and  y= The final‑exam scores  r= 0.5…

Q: Sergio is doing a long hike and is carefully calculating his pack weight. An energy bar has mean…

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Q: 23. Of the following Z-score values, which one represents the location closest to the mean? A.…

A: Note: As per the guidelines, we are only allowed to solve 1 question at a time, please post the…

Q: 6.) The daily water usage per person in Davao City is normally distributed with a mean of 18 gallons…

A: 6.) The daily water usage per person in Davao City is normally distributed with a mean of 18 gallons…

Q: ... Since the z score for the tallest man is z = and the z score for the shortest man is z = | , the…

A: The tallest living man at one time had a height of 238 cm. The shortest living man at that time had…

Q: The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the…

A: Mean = 118.3 Sd =25 N= 25 Hypothesis test Ho :μ = 110Ha:μ > 110

Q: 5. A set of final exam scores has a mean of 53 and a standard deviation of 6. The scores are…

A: Note : - As per our policy we can answer only one question at a time, please make a new requests for…

Q: Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the…

A: As per company guidelines, I solved exactly three subparts of the question. Given data: 42, 41, 39,…

Q: You have a data set with mean = 40 and standard deviation = 3. What can you say about the percentage…

A: Given  μ=mean=40, sd=σ=3 P(32<X<40)= ?  Note: this probability value calculated from standard…

Q: A college admissions office needs to compare scores of students who take the SAT vs ACT. The…

A: Given,For SATMean, μ1 = 896Standard deviation, σ1 = 174For ACTMean, μ2 = 20.6Standard deviation, σ2…

Q: In this exercise, you will compare Chebyshev’s rule and the empirical rule. a. Compare the estimates…

A: a)The Chebyshev’s rule estimates at least 75% of observations lie within two standard deviations of…

Q: You are provided with a mean of 28.18 with a standard deviation of 4.33.  What percent of students…

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