ample of 3000 persons were surveyed for their walght in pounds, the mean weight is 135 lbs with a standard deviation of 5 lbs. How many of the people surveyed will have a weight between 130 and 140 lbs.

Q: An instructor in a large lecture class found, at the end of the semester, that the total point…

A: Given Data: Let X represent the point distribution Mean=530 Standard deviation=80   X~ Normal(530,…

Q: The height of an adult male is known to be normally distributed with of mean of 69 inches and a…

A:

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: It is given that mean amount of food is 12 oz and number of dogs is 16. The sum of squared…

Q: The grades of students were normally distributed with mean of 68 and standard deviation of 15.70. If…

A: A distribution which has bell shaped curve is called normal distribution. A bell shaped distribution…

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 242 cm.…

A: Thus, the standard z-score for the tallest man is 10.51.

Q: Use Z scores to compare the given values The tallest living man at one time had a height of 245cm.…

A:

Q: A researcher collects the distances between survey respondents and the closest grocery store. The…

A:

Q: Steel rods are manufactured with a mean length of 27 centimeter​ (cm). Because of variability in the…

A: Given Data Population Mean,μ = 27.0 Population Standard Deviation,σ = 0.06

Q: the data set has a size 50, how many observations lie within 2 standard deviations of the mean

A: From the provided information, Sample size (n) = 50 The observations lie within 2 standard…

Q: A random sample of 49 shoppers showed that they spend an average of $23.45 per visit and the…

A: 1. Point estimate of the population mean is the sample mean.

Q: Sarah's score on the second exam was 34 for which the mean of all scores was 28 and the standard…

A:

Q: The measure of dispersion which shows the variation about the me O a. Standard deviation O b.…

A: The coefficient of variation (CV) is a statistical measure of the dispersion of data points in a…

Q: The weights of bags of flour are normally distributed. The mean of the weights is 5.0 lb with a…

A: To find: a) Percentage of bags of flour weigh less than 4.8lb b) In a group of 75 bags, how many…

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: Roel's score in Math was 90 with a mean of 85 and a standard deviation of 1.5. His score in English…

A:

Q: The monthly incomes of 16 students were analyzed and their average was 1000 TL and the standard…

A: Given data,μ=1000σ=200n=16z=2.7x=?

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 245 cm.…

A: Determine the Z-score for the tallest man. The Z-score for the tallest man is obtained below as…

Q: a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 34 beats per…

A:

Q: Find the standard deviation for the group of data items. Stems Leaves 3 4 16 16 The standard…

A:

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 263 cm.…

A:

Q: Determine the difference X - Y for each matched-pair, then compute the mean and standard deviation…

A: X: 25,26,16,21,15Y: 28,31,30,22,29

Q: On an exam, Tom scores 12 points above the mean and has a z-score of z = +2.00. The standard…

A:

Q: Jay is a photographer who estimates that their time shooting for a cooking magazine is uniformly…

A: From the given information, Jay is a photographer who estimates that their time shooting for a…

Q: 4. The average waist size for teenage males is 29 inches with the standard deviation of 2 inches.…

A:

Q: standard deviation

A: If the random variable X follows a distribution with mean = μ and standard deviation = σ Then the Z…

Q: .Use the data to lation mean and andard deviation

A: x (x-xbar)^2 92 22.09 103 39.69 99 5.29 108 127.69 86 114.49 94 7.29 90 44.89 102…

Q: Assume that the SAT test scores are normally distributed with a mean score of 1200 and a…

A:

Q: Jason's z- score in the 10-k run was -3. if the raw score standard deviation was 5, and the mean…

A:

Q: The mean of fifty sales receipts is $65.75 and the standard deviation is $10.55. Using Chebyshev’s…

A: Here, The mean of fifty sales receipts is $65.75 and the standard deviation is $10.55. Chebyshev’s…

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 248 cm.…

A:

Q: The mean grade in the Physics examination was 73 and the standard deviation was 8. Determine the…

A:

Q: Use Z scores to compare the given values. The tallest living man at one time had a height of 232 cm.…

A: From the provided information, Mean (µ) = 171.93 cm Standard deviation (σ) = 5.98 cm Let X be a…

Q: Use z scores to compare the given values.   The tallest living man at one time had a height of 243…

A: Given data μ = 173.68σ = 7.46Tallest man height is = 243Shortest man height is = 125.9

Q: Yoonie is a personnel manager in a large corporation. Each month she must review the employees in…

A: Solution: It is given that it takes Yoonie approximately four hours to review the employees in her…

Q: The marks of six students in a science test are represented by the variable x. The following data…

A:

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 225 cm.…

A: Normal distribution in the center is generally denser and basically less dense at the tails. There…

Q: The weight of 100 female students aged 15 to 20 years have a mean of 120 pounds and a standard…

A: Solution: Given data: Sample size (n) = 100 Mean = 120 pounds Standard deviation = 6 pounds

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 238 cm.…

A: Solution

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 227 cm.…

A: Given data,μ=172.36σ=5.76

Q: 6. The mean value of a 2005 Honda Accord is $8200, with a standard deviation of $1300: a. Give the…

A: Given data,Mean μ=8200sd σ=1300

Q: A distribution of exam scores as a mean of 42.If your score is X=46, which standard deviation would…

A: Given data, μ=42X=46

Q: In a Calculus test, the mean score is 42 and the standard deviation is 5. Assuming the scores are…

A:

Q: Jerome made a grade of 89.7 on his test. The mean of the test scores was 71.4 with a standard…

A: Consider X be a random variable which follows normal distribution indicates the test scores. The…

Q: A farm hatches chicken eggs in batches of 15 and there is a 3% infertile rate. Find the standard…

A: Obtain the standard deviation for the number of infertile eggs per batch.   The standard deviation…

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

A:

Q: The average score on a test of 40 students has a mean score of 53 and a standard deviation of 6. At…

A: Answer - The average score on a test of n = 40 Student has a mean score μ = 53  and σ = 6…

Q: A man was out shopping buying 100 watermelons. He wanted to buy the largest fruit so he calculated…

A: We have to find out given probability..... As per guideline expert have to find out given first…

Q: Five hundred children participated in a field demonstration. Their heights averaged 110 cm with a…

A:

Q: the heights of 200 plants in a garden follow a normal distribution with mean of 72.3 cm with a…

A: Formula : Z =(X - μ)/σ

Q: A biologist found the wing span of a group of MONARY butterflies to be normally distributed with a…

A: