In the final Examination in Statistics, the mean grade was 82 and the standard deviation was 8. In Thermodynamics, the mean grade was 86 and standard deviation was 10. Romeo Scored 88 in Statistics and 92 in Thermodynamics. In what subject was his standing higher?

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: After entering the test scores from her Statistics class of 25 students, the instructor calculated…

A: IQR is obtained as the difference between the third and first quartiles.

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: 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: Mikayla and Kathryn began arguing about who did better on their tests, but they couldn't decide who…

A: the students' test grades in the Art History class had a mean of 72 and a standard deviation of 9.3,…

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: Laura learned that the average GPA in her school is 3.6 with a standard deviation of 0.3. If her GPA…

A: From the given information,   Mean = 3.6 Standard deviation = 0.3   The objective is to find the…

Q: When you use the standard deviation as a measure of variation, what is the reference point?

A: Standard deviation:The standard deviation indicates by how much each observation differs from a…

Q: On a nationwide math test, the mean was 52 and the standard deviation was 4. If Roberto scored 85,…

A: The z score formula is,

Q: In any data set, what percent of data lies within 8 standard deviations of the mean

A: Given:  In any data set, what percent of data lies within 8 standard deviations of the mean??

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: Natalie and Stephanie began arguing about who did better on their tests, but they couldn't decide…

A:

Q: Show your solution:  If Peter got a 79 on a Math Test with a mean score of 85 and a standard…

A: The z-score is calculated asz=x-μσ

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

A: Using the empirical rule, The formula for calculating the score of X falls 3 standard deviations…

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

A:

Q: the mean for the Verbal Reasoning section was 151 with a standard deviation of 9, and the mean score…

A: Note: According to bartleby experts question answers guidelines an expert can solve only first three…

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: Erik and Juan began arguing about who did better on their tests, but they couldn't decide who did…

A:

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: For a set of data, μ = 71, X=35, z = -0.60. What is the standard deviation of the population?

A: Given that.   X~N( μ , ?^2 )   μ=71   , ?=?  , X=35 , z=-0.60   Z-score =( x - μ )/?

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: In a survey, the median household income in a country was found to be £27000, and the mean household…

A: Given: Mean=53000Median=27000

Q: On a nationwide math test, the mean was 58 and the standard deviation was 4. If Roberto scored 70,…

A:

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

A:

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…

A: If the z-score lies within 2 standard deviation away from the mean, then the score is not unusual…

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: A distribution of exam scores has a mean of μ = 78. If your score is X = 80, which standard…

A:

Q: It is often quoted that in a normal distribution, 95% of the data lies 1.96 deviations either side…

A: We have given that  Normal distribution 95% of the data lies 1.96 deviations either side of the…

Q: The mean score on the Stats exam was 75 points with a standard deviation of 5 points, and Gregor’s…

A: The mean score on the Stats exam was 75 points with a standard deviation of 5 points, and Gregor’s…

Q: Aaliyan and Lloyd began arguing about who did better on the tests, but they couldn't decide who did…

A: (a) Obtain the Z-score for the Aaliyah’s test grade. The Z-score for the Aaliyah’s test grade is…

Q: Suppose you are told that you scored  two standard deviations below the mean on a measure where the…

A:

Q: Florida State University, the mean IQ is 116 with a standard deviation of 14. Given this…

A: In the School of Medicine at Florida State University, the mean IQ is 116 with a standard deviation…

Q: The mean (and standard deviation) snowfalls for two cities are noted below. Ottawa, Ontario Canada:…

A:

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

A: Miranda's test grade (Social Studies) 71.4 75.3 10.7 Karla's test grade (Art History) 60.9…

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: 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: Isabella was told that her score on an aptitude test was 3 standard deviations above the mean. If…

A: In this question we have given that test scores follow the normal distribution with mean = 77 and…

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: For the layperson, explain what the standard deviation of 2.2 means compared to the standard…

A: The standard deviation of women for tallest acceptable height is 2.2. It can be explained as, each…

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…

Q: Suppose the main percentage in algebra is 70% and the standard deviation is 8% What percentage of…

A: Given,  mean value(μ) =70%  standard deviation(σ) = 8%Z=x-μσZ1=62-708=-1Z2=94-708 =3