←Sample annual salaries (in thousands of dollars) for employees at a company are listed.53 50 58 48 39 39 53 50 58 25 48 53 41(a) Find the sample mean and sample standard deviation.(b) Each employee in the sample is given a 5% raise. Find the sample mean and sample standard deviation for therevised data set.(c) To calculate the monthly salary, divide each original salary by 12. Find the sample mean and sample standarddeviation for the revised data set.(d) What can you conclude from the results of (a), (b), and (c)?

Here, the number of sample observations is 13. Thus, . The sample mean is calculated as follows: The…

Answered: Sample annual salaries (in thousands of…

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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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…
answer A, B and C
I need range, variance, and standard deviation please with step by step so I can learn.
Please find the range, sample standard deviation and inter-quartile range (IQR) of the following data set. 22 35 36 46 46 56 58 69 76 93 range = (Please enter an exact answer.) standard deviation (ss) = (Please show your answer to one decimal place.) IQR =________ (Please enter an exact answer.)A new number, 215, is added to the data set above. Please find the new range, sample standard deviation and IQR of the new data set.range =________ (Please enter an exact answer.) standard deviation = ___________ (Please show your answer to one decimal place.) IQR =________ (Please enter an exact answer.)Which measure of spread is less affected by the addition of the extreme observation? IQR Range standard deviation
The data in the table is points scored by a basketball team in a certain period of time. Use the data in the table to answer the bulleted statements.
Which is NOT a correct statement about mean, median, standard deviation, or interquartile range? a. Mean is more affected by changes in extreme observations b. Median is less affected by changes in extreme observations c. Standard deviation is less affected by changes in extreme observations d. Interquartile range is less affected by changes in extreme observations
The 2004 Cincinnati Bengals scored 24, 16, 9, 17, 17, 23, 20, 26, 17, 14, 58, 27, and 28 points in their first 13 games. 2. Find the mean and the standard deviation of 3. Remove the lowest score from the data set. the data. Then find the mean and standard deviation of the new data. 4. How do the standard deviation and mean change when you remove the lowest number? Why do you think this is?
z Scores LeBron James, one of the most successful basketball players of all time, has a height of 6 feet 8 inches, or 203 cm. Based on statistics from Data Set 1 “Body Data” in Appendix B, his height converts to the z score of 4.07. How many standard deviations is his height above the mean?
Gabriel and Lucia took a road trip across the country. The room costs, in dollars, for their overnight stays are listed in the accompanying table. How many of the cost amounts are within one standard deviation of the mean? Click the icon to view the room costs in dollars. There are cost amounts within one standard deviation of the mean. (Type a whole number.) Room Costs ($) 70 100 140 185 195 200 215 220 225 290 310 315 D -
Find the mean and standard deviation for the individualized instruction s cores. Scores Individualized Instruction 50 - 59 60 - 69 70 - 79 6 80 - 89 11 90 – 99 6. Mean = (Round to the nearest hundredth.) Standard deviation =| (Round to the nearest hundredth.)

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