Calculate the mean if -2 standard deviation = 70 and +2 standard deviation = 100. The mean of the data set 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: The spread or dispersion of a set of data about the mean will be large if the standard deviation is…

A: Solution

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: A successful basketball player has a height of 6 feet 2 ​inches, or 188 cm. Based on statistics from…

A: Given the Z score of height of basket ball player is 1.95. The original height of the basket ball…

Q: The distribution of the cost of a family’s dine-out meal has a mean of $55.30 and a standard…

A: Given ,Mean μ=$55.30Standard deviation σ=$4.00

Q: What is the 80th percentile if the mean is 3 and the standard deviation is 0.6

A: It is given that µ= 3, σ= 0.6.

Q: A history class has 95 members. If there is a 22% absentee rate per class meeting , find the mean…

A:

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

A: We have given that,  Let X be the random variable from normal distribution with mean (μ)= 79,…

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: The arithmetic mean and the standard deviation of a set of 9 items are 43 and 5

A:

Q: suppose data set A has a mean of 12 and a standard deviation of 2.5  Data set B has a mean of 12…

A: The formula for coefficient of variation is, CV = (s/ x̅ ) × 100%, where s is the sample standard…

Q: A data set has a mean of 40 and standard deviation of 8. -2 standard deviation = -1 standard…

A: From the provided information, Mean of the data set (µ) = 40 Standard deviation (σ) = 8 Using…

Q: If the average weight for cats is 12 pounds and the standard deviation is 2 pounds. 68 percent of…

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

Q: What is the Z value for a value of X = 60?

A:

Q: Would you be able to help with Standard Deviation along with the range, mean, mode, and median?

A: Measures of variability:The measure of variability or the measures of dispersion can be measured…

Q: . A distribution has a coefficient of variation of 65% and mean of 47. What is the value of the…

A:

Q: Convert score 46 to z-score if the mean is 40 and the standard deviation is 4.

A: The definition of a z-score is:   z = (X - μ) / σ

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: If a data set has a mean of 80 and a standard deviation of 10, calculate + 1.5 standard deviations

A: Here, the data set has a mean of 80 and a standard deviation of 10.

Q: The deviation of an entry x in a population data set is the difference between the entry and the…

A: Note: Hi there! Thank you for posting the question. It is considered that the deviation is taken…

Q: It is possible to have a standard deviation of -1 for some data set? True or False

A: See the below solution

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: The mean of data set A is 42. The mean of data set B is 47. The mean absolute deviation of both sets…

A: Mean of data set A =42 Mean of data set B=47  Mean absolute deviation of A and B =2.5 To find :-…

Q: The arithmetic mean and the standard deviation of a set of 9 items are 43 and 5 respectively . If an…

A:

Q: If the average weight for cats is 12 pounds and the standard deviation is 2 pounds. 68 percent of…

A: Given, mean = 12 standard deviation = 2 Need to find the area of the Normal curve covering 68% of…

Q: The mean height of women is 62 inches with standard deviation of 4 inches. What percent of women are…

A: From the given information, Mean height (µ) = 62 inches Standard deviation (σ)= 4 inches Thus, the…

Q: The mean height of women is 62 inches with standard deviation of 4 inches. What percent of women are…

A: If a random variable x has a distribution with mean µ and standard deviation σ, then the z-score is…

Q: A distribution of exam scores has a mean of μ=80. If your score is X = 74, which standard deviation…

A:

Q: A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what…

A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…

Q: Suppose you scored 83, 77, 72, and 82 O on your four exams in a mathematics course. Calculate the…

A: The given scores are 83, 77, 72, and 82.We need to find the range and standard deviation of the…

Q: On a nationwide math test, the mean was 57 and the standard deviation was 4. If Roberto scored 90,…

A: Formula for z-score is

Q: A forest ranger researching ecosystem recovery following forest fires collected data on a large…

A: Given that Mean = 3.2 feet Standard deviation = 0.6 feet

Q: Calculate the mean if -2 standard deviation = 70 and +2 standard deviation = 100. The mean of the…

A: -2 standard deviation is given by, (Mu-2sigma)= 70  Mu+2sigma= 100 Where mu is mean and sigma is…

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: Professor Ivy’s students have a Mean grade of 69.5 and a Standard Deviation of 6.5.  If Johnny has…

A: From the provided information, Mean (µ) = 69.5 Standard deviation (σ) = 6.5 Let X be a random…

Q: A data set has a mean of 40 and standard deviation of 8. -2 standard deviation =  -1 standard…

A: It is given that the mean is 40 and the standard deviation is 8.

Q: Find the mean and standard deviation interpretation

A: * SOLUTION : -   * Given that,

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: If the mean snowfall for Ottawa Ontario Canada is 98 inches per year and the standard deviation is…

A: Given,mean(μ)=98standard deviation(σ)=25

Q: Which student received the highest grades from the quizzes?

A: here given , Jasmine, Jamal, and Jessa all got the same mean grade (2.7) on their quizzes last…

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

A:

Q: The Variance for a set of scores is 36, what is the standard deviation, what is the range?

A: Given, variance = 36Therefore,  Standard deviation = square root of variance…

Q: Find the range and standard deviation of the set of data. 10, 8, 7, 13, 17 -

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 doctor in the oncology department of a hospital surveyed the breathing rate of cancer patients.…

A:

Q: The mean for data set is 59, the standard deviation is 4, and the z- score is 0.03, what is the raw…

A: Here given that the mean =59, standard deviation=4, z score=0.04, we need to find the raw score x.

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

A:

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: Karen scored a 76 on an exam whose mean is 74 and whose standard deviation is 8. Find her z score.

A:

Q: there are 75 students in the class and 20 students are getting a+ grade in the class find the mean…

A: