Your friend is planning to apply to law school. He is reading what a typical law student's life is like. He remembered the average number of hours they spent on school-related tasks each day, but could not remember whether the standard deviation was 20 minutes, 2 hours, or 20 hours. Tell him which one must be correct, and explain how you know it. (The length of this answer should be about

Q: For a list of positive numbers, is it possible for the standard deviation to be greater than the…

A: Mean: The mean defines that the center or average of the data and it is calculated by the sum of the…

Q: Raul received a score of 73 on a history test for which the class mean was 70 with a standard…

A: Here we need to find the z score and for that, we have to use the formula z = Value-meanStandard…

Q: A random sample of 54 four-year-olds attending day care centers provided a yearly tuition average of…

A: Given n=54 X-bar=3912 Standard deviations=615

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

A: Solution: Given information:   Mean  Standard Deviation  English Class 73.9 9.4 Art History…

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

A: The all students' test grades in the social studies class had a mean of 75.8 and a standard…

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

A: GivenJacy took a test in Math and earned a 78.2 Bella took a test in social studies and earned a…

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

A: Given information English class Bill Marks x = 66.3 Mean µ = 66.8 Standard deviation σ = 10.5 Social…

Q: If a set of numbers has a standard deviation of zero, what can you say about the numbers?

A: The standard deviation indicates that amount of deviation of data points from 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: Out of a class of 25 students, 24 took an exam in class and got a mean of 74 points and a standard…

A: Given: Total number of students, n = 25            Number of students who gave the test, n' = 24…

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

A: The z-score identify that the value how many standard deviations from the mean. If the z-score is…

Q: Omar is trying out to be a firefighter.  On the written exam, the mean of everyone who takes the…

A:

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: a math exam, Joel had a score of which was exactly 2 standard iations above the mean. The dard…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: CO LO Translate Mikayla and April began arguing about who did better on their tests, but they…

A: Solution The one who have a  higher  score did better.

Q: How would you find the standard deviation by hand, of the following numbers: 1,1,3,01,6,2

A: Standard deviation:Standard deviation quantifies the dispersion of a data set from its mean. The…

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

A:

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

A: A z-score is the standard score that determines how much the data point deviates from the population…

Q: The average life of a car tire is 50,000 miles.  The standard deviation is 2,000 miles   What…

A: Normal distribution, also known as the Gaussian distribution, is a probability distribution that is…

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: An mechanic wishes to determine the length of the typical battery cable. If he knows that the…

A: Given: Standard deviation =3.7 E=0.30 95% confidence interval =1.96 Determine the number of cables…

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

A: Given information- For Science- Population mean µ = 71.3 Standard deviation σ = 8.9 For English-…

Q: What percentage of the widget Weights lie between 55 and 79 ounces when the mean is 61 and the…

A: We have to  given probability...

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

A:

Q: According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the…

A: Given X is normal Distributed with mean µ = 65.0 and standard deviation σ = 3.0 Need to find Z score…

Q: On the past mathematics test, the bottom 20% of students failed to pass the test. The mean for the…

A: The mean of the data is μ=55 and the standard deviation is σ=11 It is also given that 20% of…

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

A: Given information- We have given that Miranda took test in social studies and earned a 71.5. And…

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: If your score on your next statistics test is converted to a z-score, which of these 2- scores would…

A: Given: Z-scores: -2, -1, 0, 1, 2. The height converts to the z score is=4.07

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

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: Would it be reasonable to use the standard deviation formula?

A: here  According to a gallup survey of boys 77% of boys had played computer games in the past week…

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…

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

A: Rebecca earned a test grade of 71 in English. The mean and standard deviation of test grades in…