Maria made 75% on her Government test and 83% on her Algebra 2 test. The mean grade on the Government test was 72% with a standard deviation of 5%. The average grade on the Algebra 2 test was 81% with a standard deviation of 4%. On which test did Maria do better?   Please answer correctly. This question deals with Measures of Variation.

Q: If these data are converted to deviation scores, the last value (15) would have a value of Y 2 9 11…

A: Solution: The mean of Y is

Q: On a nationwide math test, the mean was 75 and the standard deviation was 10. If Roberto scored 85,…

A: The formula of Z-score is,

Q: A group of students wrote an entrance Math exam and the scores were normally distributed. The mean…

A: The scores were normally distributed with mean 750 and standard deviation 95 μ=750σ=95 Z-score is…

Q: The average high temperature for Atlanta in January is 53 degrees with a standard deviation of 8.2…

A: INTRODUCTION :  To measure the variability of which series is consistent than any other then the…

Q: Alice was told that her reading test score was 3 standard deviations below the mean. If test scores…

A: Z-score is the measure of how far the standard deviation is away from the mean (above/below). Above…

Q: Calculate the z-score for Jacqueline's test grade. z=z= [Round your answer to two decimal places.]…

A:

Q: Corey and Noah began arguing about who did better on their tests, but they couldn't decide who did…

A: Note: Hi there! Thank you for posting the question. Here to avoid the plagiarism issue we have used…

Q: The first Stats exam had a mean of 70 and a standard deviation of 10 ​points; the second had a…

A: The first Stats exam had a mean of 70 and a standard deviation of 10 ​points; the second had a mean…

Q: On a nationwide math test, the mean was 57 and the standard deviation was 10. If Roberto scored 80,…

A:

Q: The mean grade on a science test was 79 and there was a standard deviation of 6. If your sister…

A: The z score explains the deviations of the observations from the mean. It is calculated using the…

Q: The standard deviation of 15 scores was 5 and the mean was 85. What was the variance?

A: We have given that  N=15 Mean=85 Standard deviation=5 Note: According to Bartleby Expert guidelines,…

Q: What will be the interpretation if correlation (r) has a value of -.5439? At what percent does the…

A: Correlation coefficient "r" measures linear relationship between between two variables. It lies…

Q: On a nationwide math test, the mean was 63 and the standard deviation was 10. If Roberto scored 85,…

A: GivenMean(μ)=63standard deviation(σ)=10score(x)=85

Q: Emily and Hillary began arguing about who did better on their tests, but they couldn't decide who…

A: Note: Hi there! Thank you for posting the question. To avoid the Plagiarism issue we have used the…

Q: On a nationwide math test, the mean was 69 and the standard deviation was 7. If Roberto scored 80,…

A: Given,mean (μ)=69standard deviation (σ)=7andRoberto score(X)=80

Q: A group of students take a Statistics Exam where the average was M = 90 and the standard deviation…

A:

Q: John got 83 on a test, with a standard deviation of 10.73 and the class mean was 77.1. Paul got 88…

A: From the provided information, John got (X) 83 on a test with a standard deviation (σ) of 10.73 and…

Q: You want to know the percentage of utility companies that earned revenue less than 39 million or…

A: Given data You want to know the percentage of utility companies that earned revenue less than…

Q: If Quiz A has a mean of 7.6 and a standard deviation of 2.0 and Quiz B has a mean of 7.9 and a…

A:

Q: A student learns that on his most recent exam in psychology, the sample mean was 72.19 with a…

A:

Q: DeAndre and Jonah began arguing about who did better on their tests, but they couldn't decide who…

A: GivenDeAndre earn in science=81.2Jonah earn in Art History=61.9For science Mean(μ)=72.2standard…

Q: If the mean is 8, then the mean absolute deviation of the scores 10 9 3 8 10 is?

A: Given mean (μ) = 8 Then Mean Absolute Deviation is given by  1n∑xi-μ

Q: What was the cutoff for a failing score? Approximately what percentage of the students failed?

A: The scores on a psychology exam were normally distributed with a mean of 68 and a standard deviation…

Q: Bill scored 35 on a college algebra exam, where the mean was 25 and the Standard Deviation was 5.…

A: Given that the score for algebra exam is 35, mean is 25 and standard deviation is 5. z score for…

Q: Ava scored a 92 on a test with a mean of 71 and a standard deviation of 15. Charlotte scored a 688…

A: HERE GIVEN , Ava scored a 92 on a test with a mean of 71 and a standard deviation of 15. Charlotte…

Q: In the final Examination in Statistics, the mean grade was 82 and the standard deviation was 8. In…

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Q: The mean grade of Adrian in the standard deviation was 7. In Science, his mean grade was 89 and the…

A:

Q: The mean score of the students on pre-assessments is 10 and the standard deviation is 2. What was…

A:

Q: A group of students take a Statistics Exam where the average was M = 90 and the standard deviation…

A:

Q: Looking at the test data, Jason saw that his score was a 2.5 with a mean of 79 and a standard…

A: We will find the actual score as following.

Q: In Statsville, there is a city-wide speed limit of 30 mph. If you are caught speeding, the fine is…

A: Let X be the random variable of drivers who were fined Given Data: E(X)=42 SD(X)=7   Let Y be the…

Q: Many students did an exam, the mean was 15 and the standard deviation was 32 The highest mark was…

A: Given Mean μ=15, standard deviation σ=32  X=103

Q: a nationwide math test, the mean was 60 and the standard deviation was 7. If Roberto scored 85, what…

A: Given data,Mean μ=60sd    σ=7 If Roberto scored 85z-score=?

Q: On a verbal skill test, the mean was 72 and the standard deviation was 7. If John scored 75, what…

A: Given data,Mean μ=72sd      σ=7If John scored 75z-score=?

Q: Max scored an 80 on her psychology quiz, but the class as a whole averaged a 40. If the standard…

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Q: Mariah and Amanda began arguing about who did better on their tests, but they couldn't decide who…

A:

Q: Jared has a mean of 74 on his quizzes, with a standard deviation of 7. On his most recent quiz, he…

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Q: In a certain test in Calculus, the mean score of a group of 100 students was 30 and the standard…

A: The mean for calculus is 30 and standard deviation is 8, the mean for physics is 52 and standard…

Q: Stacy and Danielle began arguing about who did better on their tests, but they couldn't decide who…

A: Obtain the z-score for Stacy's test grade. The z-score for Stacy's test grade is obtained below:…

Q: When I need to determine which standard deviation would give the better grade, what if the z-score…

A: If the absolute value of z-score is higher than the other then it will provide better grade.

Q: Alicia scored a 70 on her psychology quiz, but the class as a whole averaged a 40. If the standard…

A: From the provided information, Population mean (µ) = 40 Standard deviation (σ) = 10 Let X be a…

Q: n which test did she perform better?

A: Here use standard normal variable Z for comparison  Here mean and standard deviation is from 200…

Q: Suppose you have already calculated the mean, the average deviation, and the standard deviation of…

A: (a) Condition for Average Deviation: If the value of the observation is increased or decreased by a…

Q: on a nationwide math test,the mean was 63 and the standard deviation was 7. if roberto scored…

A: According to the given information, we have Mean = 63 Standard deviation = 7

Q: A successful basketball player has a height of 6 feet 4 ​inches, or 193 cm. Based on statistics from…

A:

Q: The mean grade of Adrian in the final examination in mathematics was 85 and the standard deviation…

A: For mathematics :mean(μ)=85standard deviation(σ)=7For sciencemean(μ)=89standard deviation(σ)=13

Q: What does a mean of 9.1429 and a standard deviation of 2.5455 tell you

A: We have given that a mean of 9.1429 and a standard deviation of 2.5455.

Q: The mean of 7 consecutive integers is 10. What is the standard deviation?

A:

Q: The average score on the Stats midterm was 71 points with a standard deviation of 5 points, and…

A: Given that mean = 71 and SD = 5 And the z score is given by Z = 1

Q: The mean grade of  Adrian in the final examination in mathematics was 85 and the standard deviation…

A: Mean for mathematics = 85 Standard Deviation for mathematics = 7 Mean for science = 89 Standard…