The Population mean, µ, of a Standard Mathematics Exam scores was 500 with astandard deviation, o, of 50. Assume the distribution of test scores is Bell-Shaped.Answer questions 8-44Tallyclesses208. 95% of the Test Scores is in what interval?9. 47.5% of the Test Scores are in what interval(s)?310- 687, of t he Test sures ane in What in le.vls)11-99%10. Lenora scored a 62 on her Psychology Test. The sample mean test score was 50 andthe sample standard deviation was 4.5. Was her Test Score usual or unusual? Explainyour Answer. John scores 60 on the same Psychology test. Was his Test Score usual orunusual? Explain your answer.トグThanXTo Fat Nintar of

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The Population mean, µ, of a Standard Mathematics Ex standard deviation, o, of 50. Assume the distribution of Answer questions 8-4 8. 95% of the Test Scores is in what interval? 9. 47.5% of the Test Scores are in what interval(s)? 10-687, of the Test scres ane in What in

The Population mean, µ, of a Standard Mathematics Ex standard deviation, o, of 50. Assume the distribution of Answer questions 8-4 8. 95% of the Test Scores is in what interval? 9. 47.5% of the Test Scores are in what interval(s)? 10-687, of the Test scres ane in What in

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Show your handwritten work on the paper. The following is a frequency distribution of ages of residents of a senior citizens' home in New York. Fill in the midpoints, then calculate the mean and the standard deviation. Round to two decimal positions. You may assume the data represents a population. Ages of Residents Midpoints Frequency 50-62 63 75 76--88 a. Mean (u)3D b. Standard deviation (o) = Round the standard deviation up to 2 decimal places if necessary. Hint: Use the midpoint for each class (ages of residents). 2.
Ch 8 FRQ ( The distribution of average speeds of the top 53 drivers in NASCAR is roughly symmetric, unimodal, and bell-shaped, with a mean of 184.8 mph and a standard deviation of 7.2 mph. In the space above, draw a Normal Curve, from z=-3 to z=+3. Draw vertical lines at the mean and each whole number standard deviation above and below the mean. Write two rows of numbers under the base line; one row with the number of standard deviations above and below the mean (z-scores), and a row under that with the actual values for this problem. ] What percent of drivers would you expect to have speeds below 199.2 mph ? Show all work. s] What is the area under the curve to the left of a speed of 170.4mph Show all work. What is the probability that a driver selected at random will have a speed below 172.0 mph ? Show all work. B] What percent of drivers would you expect to have a speed above 177.0 mph ? Show all work. How many drivers would you expect to have speeds between 170.4 mph and 177.0 mph…
The standard deviation of a population A. Is the average of the squared deviations between each of the data points and the mean B. Is the average distance from each of the data points to the population's mean C. Is impossible to calculate D. Is only for statisticians E. All of the above F. None of the above
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mg mg Calcium levels in people are normally distributed with a mean of 9.5 and a standard deviation of 0.3 dL dL Individuals with calcium levels in the bottom 15% of the population are considered to have low calcium levels. Find the calcium level that is the borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place. mg dL X
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Question 15 Find the standard deviation for the set of numbers. Answer saved Marked out of 1.00 5, 11, 9, 20, 19, 7,7, 11, 17 Flag question Select one: A. 1.5 B. 5.9 C. 5.2 Clear my choice Previous page
Calcium levels in people are normally distributed with a mean of 9.7 mgdL and a standard deviation of 0.5 mgdL . Individuals with calcium levels in the bottom 10% of the population are considered to have low calcium levels. Find the calcium level that is the borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place.
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Solve question 5. Show work for it aswell please with the steps.
3) During a study, the weights of test subjects was recorded. The results are displayed in the graph below. Use the graph to determine the value of the following descriptive statistics Histogram of Wt (n=40) 20 15 10 10 100 150 X Values D How many weights were recorded? D) What is the average weight? O Approximate the standard deviation. d) What is the one-standard deviation interval around the mean? How many weights were within this interval? I What percentage of weights were within this interval? What is the two standard deviation interval around the mean? hi How many weights werE within this interval? What percentage of we were within thisterva What is the three standard deviation ntervalarund the mean K) How many weights were within this interv What percentage of weights were withiin thikinterval? 梦 $ hp
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