Two employees Tom and Jerry are to compare their daily routine of work. Tom can finish his job with an average of 2.5 hours with a standard deviation of 0.045 hour, whereas Jerry can finish the job with an averageof 4.5 hours and a standard deviation of 0.01 hour. Who is more consistent? The Coefficient of Variation of Tom is while Jerry is

Q: some reports, the mean and coefficient of variation are given. For instance, one report gives the…

A: Given that the mean is 2.6 and the coefficient of variation is 2.7%. We have to find the standard…

Q: Wyatt earned a score of 670 on Exam A that had a mean of 750 and a standard deviation of 50. He is…

A: Here both exam A and exam B are normally distributed. We need to find the marks required in exam B…

Q: Fit in a straight line the following tabular data, which shows the weight in "kg" and the height in…

A: The sample data of 10 children along with heights and weights is given. Treat height as independent…

Q: Joe and peter each take 10 swings at a baseball. Joe hits a baseball an average of 290 feet with a…

A: Given information- We have given that Joe and Peter each take 10 swings. Joe hits a baseball an…

Q: THE INFORMATION BELOW REFERS TO THIS AND THE NEXT QUESTION. The heights of adult women in the…

A: A critical value is a point on the test distribution that is compared to the test statistic to…

Q: The studernt scored the same on both tests. O B. The student scored better on the mathematics test.…

A: Given : For geography test student score, x = 68.0 population mean, μ = 80.0…

Q: Q3. Consider the following exam scores of all students in a class. 39, 15, 27, 21, 33, 24, 18, 36,…

A: Given data :  39,15,27,21,33,24,18,36,42,30

Q: Isn't here the standard deviation equal to 4, not 2, as the tutor wrote?

A: Solution-: Given: μ=-3,σ=4 We want to find, P(0<X<2)=? Draw the picture.

Q: What would be the effect on the standard deviation of the set of scores 13, 14,15, 15, 16, and 17 if…

A: We have to find effect of membres on standard deviation.

Q: Both data sets have a mean of 195. One has a standard deviation of 16, and the other has a standard…

A: Given the box plot of data sets A and B, we use the key: 15|8=158. And also given that both data…

Q: You have a dataset with a mean of 50 and a standard deviation of 5. What is the coefficient of…

A: From the provided information, Mean (x̄) = 50 Standard deviation (s) = 5

Q: The mean and standard deviation of a set of 100 observations were Worked out as 40 and 5…

A: We have given that Number of observations(n)=100  Corrected mean=40 Standard deviation=5  Mistaken…

Q: Consider two investment options: Stock A and Stock B. Every $100 invested in Stock A yields a return…

A: The standard deviation for the portfolio is a function of the standard deviations of the assets that…

Q: 5 students were given a test. The average and standard deviation of the 5 scores were found to be…

A:

Q: John calculated r -.44 for a set of n 10 pairs of values that represent the number of absences from…

A: Given that r = -0.44 midterm exam score ( y )   number of absences from class (x)

Q: JaJuan want to estimate the average student GPA at his high school. He surveys 37 students and finds…

A: Given,sample size(n)=37sample mean(x¯)=3.33population standard deviation (σ)=0.29

Q: how did you find the standard deviation to be 1.2. explain clearly?

A: Here we have to explain the how we get standard deviation is 1.2

Q: A teacher wishes to give A’s to the top 8% of the students and F’s to the bottom 8%. The next 10%…

A: Here we need to find the mean, median and mode for the given normal distribution. Also we need to…

Q: O E atistic is | (Round to two decimal places as needed.)

A: For medium lead level: sample size (n1) = 11 sample mean (x̄1) = Σx1 /n1 =999/11 = 90.82 sample…

Q: once, so that they na standard deviat

A: Alex cuts four sticks one at a time and their lengths are independent  with mean = 8 and Standard…

Q: Calculate the sample standard deviation for this data set: 88, 73, 91. The formula for the sample…

A: Given: Data set:88,73,91. n=3 Step 1: The sample mean is calculated as x¯=∑xin=88+73+913=84 Thus,…

Q: Block 101 got a mean of 87.5 with a standard deviation of 3.2 while Block 102 got a mean of 85.1…

A:

Q: Which of these statements is best?       The variable to be predicted is the independent variable.…

A: Which of these statements is best?       The variable to be predicted is the…

Q: ou find the standard deviation in the most easiest way?

A: The standard deviation is used to calculate the variability of the data set. It tells us about the…

Q: Hamad scored 67 on the maths final exam and 82 on the marketing final exam. The maths exam had a…

A: X1: score in maths final examand X2: score in marketing final examGiven;x1=67 ,  μ1=mean(X1)=55  ,…

Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

A:

Q: facing a shortage the student activity council decides to reduce funding for each of it's student…

A: Given : facing a shortage the student activity council decides to reduce funding for each of it's…

Q: Write down the formulas for the standard deviation of x.

A: The formula for the sample standard deviation can be written as: Here, n is the sample size and x̅…

Q: What would happen to the margin of error if the standard deviation were to decrease? it would…

A: We know that ,Margin of error=critical value ×standard deviation sample sizeMargin of error =Zα2 ×σn…

Q: A cohort of patients have lost on average 23 pounds and the standard deviation of the sample is 1.2…

A: We have been given that a cohort of patients have lost on average 23 pounds and the standard…

Q: One of the z-score formulas will help on this question. Scores on the SAT test are normally…

A: Given data,Mean μ=500sd σ=100Score X=450z-score =?

Q: in new yorkl cxity college , the  weight of male atheletes follow a normal distributin owith  with…

A: It is given that, weight of male athletes follow a normal distribution with st deviation  = 35 lbs…

Q: find standard deviation if range is 3.

A: Given: Range = 3