(24-6. Comment briefly on the following statements: (1) A computer obtained the standard deviation of 20 observations whose values ranged from 65 to 85 as 25. (11) A student obtained the mean and variance of a set of 10 observations as 10,-5 respectively. (m) The range is the perfect measure of variability as it includes all the measurements. (v) For the distr.bution of 5 observations : 8. 8. 8. 8. 8 ; mean = 8 and variance = 8. (v) If the mean and s.d. of distribution A are smaller than the mean and s.d. of distribution B respectively, then the distribution A is more uniform (less variable) than the distribution B. vatirs

Q: From the following frequency bution table: Frequencies Cate 3-37 12 38-42 51 43-47 30 48-5: 7…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: Step 1 (a) Compute the coefficient of variation. Recall that if u represents the population mean and…

A: To find: Coefficient of Variation (CV)

Q: te 31. The number of workers employed, the mean wage (in Rs.) per month and standard deviation (in…

A: Given

Q: 2. Since the mean is computed from individual observed values, each of which contains an error, the…

A: Formula is given below.

Q: Suppose the mean and standard deviation of the GPAs at Loyola are Xbar = 1.675; and s =…

A: The objective of this question is to find Catherine's GPA given her z-score, the mean GPA, and the…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A:

Q: Tip: Population standard deviation: 0= 5. Find the range of dispersion and the population standard…

A: To find range and population standard deviation Sample size (n) = 6

Q: 25.  The accepted value of the standard deviation of the pollution byproducts in the burning of gas…

A:

Q: Consider two completely different data sets: price per gallon of gas in Fort Pierce and SAT scores…

A: Given : Let X : Price per gallon of gas with Mean (μ) = $2.75 Standard deviation (σ) = $0.76 Let Y :…

Q: Calculate the sample standard deviation of the data shown. Round to two decimal places. X 22 17 29…

A: The random variable X follows normal distribution. We have to find the sample standard deviation.

Q: 40 residents on their floor, she determines the values of x and y (in minutes). It obtains the…

A:

Q: The number (in thousands) of new houses sold each month in a country over a four year period is…

A: The given data for new houses sold each month is as follows:   Year 1 Year 2 Year 3 Year 4 Jan…

Q: 2. The heights are measured for a simple random sample of 9 supermodels. They have a mean of T =…

A:

Q: PROBLEM 7: Assume that the mean height for women at a large university (to be viewed as a…

A: It is given that  Mean, μ = 65 Standard deviation, σ = 3 Sample size, n = 36   Note: According to…

Q: We'd like to compare two populations A and B. Population A has a mean of 40 and a standard deviation…

A: Given, For sample A: Mean = 40 Standard deviation = 7   For sample B: Mean = 50 Standard deviation =…

Q: 3. (Sec 5.5) Suppose the average weight of 25-year-old males is 182 pounds with a standard deviation…

A:

Q: Suppose the mean and standard deviation of the GPAs at Loyola are  Xbar = 1.833; and s = 0.044…

A:

Q: Suppose that the heights of college women follow a normal distribution with a mean 65 inches and a…

A: Let X represent the heights of college women Mean=65 Standard deviation=2.5   X~ Normal (65, 6.25)…

Q: Q1 / From the following frequency distribution table: Frequencies Categories 33-37 10 38-42 12 43-47…

A: Corrected CI f x f/x 32.5-37.5 10 35 0.285714 37.5-42.5 12 40 0.3 42.5-47.5 51 45 1.133333…

Q: # of Days 10 0.0 20 Spring/Summer Group Fall/Winter Spring/Summer 4.0 OA. skewed to the left B.…

A: The median is the midpoint or middle number in a list of numbers that have been numerically ranked…

Q: Q1 / From the following frequency distribution table: Frequencies Categories 33-37 10 38-42 12 43-47…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

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: Question 6 (For question 6, just write down the answer. No explanation is needed.) (a) Sam and Peter…

A:

Q: Below are the range and standard deviation for a set of data. Use the range rule of thumb and…

A: 11. Range rule of thumb: SD=Range4

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A:

Q: A teacher was interested in the number of times her students with ADHD interrupted her class each…

A: Given population mean is 25. average was µ = 27 and the standard deviation was σ = 1.2.  sample size…

Q: For number 12-15: A doctor is interested in determining whether a fllm about exercise will change 10…

A: Answer:- Given,  Level of significance, α= 0.05 Mean (Before - After) = -3.000  P-value= 0.000  A…

Q: a. Calculate the estimate of the total profit using Ŷ. b. Is this an unbiased estimator for the…

A: Given,the total profit for of the largest computer companies was known to be (million dollars).For…

Q: 7. A population has a mean of p = 60 and a standard deviation of o - 12. 1. For this population,…

A:

Q: For number 12-15: A doctor is whether a film about exercise will change 10 persons' attitudes toward…

A: The t-distribution is very useful probability distribution when the sample size is small and the…

Q: 2.2 In a population, the correlation coefficient between family income and child IQ is 0.30. The…

A: The correlation coefficient between "family income" and "child IQ", rXY=0.30.For the distribution of…

Q: 14. In a population distribution, a score of X = 28 cor- responds to z = -1.00 and a score of X = 34…

A: We know that, Z score is given by, Z Score=(X-mu)/sigma Where mu is mean and sigma is standard…

Q: A California lake has been stocked with rainbow trout. These trout have an average length of 24…

A: Given Information: Mean μ=24 Standard deviation σ=3 Someone goes fishing and catches a trout that is…

Q: Suppose the mean and standard deviation of the GPAs at school are  Xbar = 1.487; and s = 1.332…

A: Given: Let X be the random variable denoting the GPA of every student. and GPAs are normally…

Q: For questions 9-12. The average time for a one-way trip for a student to go to school is 24 minutes…

A:

Q: #10 What is the standard deviation of the following: 18, 18, 11, 13, 35, 50 Round to 2 decimal…

A: We first find the mean of the data

Q: 1. State H, and H, for the following problem. A quality control officer claims that the standard…

A: The given claims that the standard deviation of tire pressure is not 2.3 psi.

Q: Use reg no 134 Q.1 From the set of data X having the values last number of your registration number…

A: The given registration number is 134. X1 is the last digit of the registration number. Then, X1 =4.…

Q: Mason earned a score of 226 on Exam A that had a mean of 250 and a standard deviation of 40. He is…

A: First find the standardised Z score and the make equivalency

Q: 4. Show that mean deviation about mean is

A:

Q: Question 2 Save On a history test Patrick received a grade of 43 out of 50. The class mean was 35…

A: Step 1:Here, we need to calculate the z-scores z-score is given by the formula:z = (raw score -…

Q: Assume the data set described is normally distributed with the given mean and standard deviation,…

A: Mean= 8 Standard deviation = 1.9 n= 45 Range: 6.1 to 9.9 We need to find the approximate number of…

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

A: Accuplacer test had a mean of 35 and a standard deviation of 9. When x=56 on Accuplacer test,…