List five properties of the F-distribution.Determine the first of the five properties.V and the degrees of freedom corresponding toThe F-distribution is a family of curves, each of which is determined by two types of degrees of freedom: the degrees of freedom corresponding to the variance in the numerator, denoted bythe variance in the denominator, denoted by

Answered: List five properties of the…

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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Waiting times (in minutes) of customers at a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the coefficient of variation for each of the two sets of data, then compare the variation. Bank A (single line): 6.4 6.7 6.7 6.8 7.1 7.3 7.3 7.6 7.7 7.7 o 4.3 5.3 5.9 6.3 6.7 7.6 7.8 8.5 9.3 9.8 Bank B (individual lines): The coefficient of variation for the waiting times at Bank A is %. (Round to one decimal place as needed.) The coefficient of variation for the waiting times at the Bank B is %. (Round to one decimal place as needed.) Is there a difference in variation between the two data sets? O A. There is no significant difference in the variations. O B. The waiting times at Bank B have considerably less variation than the waiting times at Bank A. O C. The waiting times at Bank A have considerably less variation than the waiting times at Bank B. Ans
calculate the following class frequency 500-750 15 750-1000 23 1000-1250 55 1250-1500 92 1500-1750 65 1750-2000 50 (a) Calculate the variance (b) Standard deviation (c) The coefficient of the variation
Waiting times (in minutes) of customers at a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the coefficient of variation for each of the two sets of data, then compare the variation. Bank A (single line): 6.6 6.7 6.7 6.8 7.0 7.2 7.5 7.7 7.7 7.7 6.7 7.7 7.8 8.4 9.2 9.7 Bank B (individual 4.1 5.4 5.8 6.2 lines): www The coefficient of variation for the waiting times at Bank A is%. (Round to one decimal place as needed.)
Ensure the RaceResults worksheet is active, then use the FREQUENCY function to calculate the frequency distribution of the race results in column D. Place your results in the range G4:G9. Enter a function in cell F22 to calculate the correlation between age (Columns C) and race time (Column D). Enter a function in cell G22 to calculate the covariance between age and race time. Enter a function in cell H22 to calculate the variance of the ages in the data set. Note this is a sample of data not a population. Enter a function in cell 122 to calculate the standard deviation of the ages in the data set.
The accompanying table shows the height (in inches) of 8 high school girls and their scores on an IQ test. Here is the data table Height, x IQ score, y62 10156 9363 10167 10858 8962 10565 11054 122 Display the data in a scatter plot. The graph in the image have been chosen. The calculated sample correlation coefficient r is r = [ 0.042 ] (Round to three decimal places as needed.) Describe the type of correlation, if any, and interpret the correlation in the context of the data. There is [A Strong Positive/A Perfect Positive/A Moderate Negative/A Strong Negative/No/A Moderate Positive/or a Perfect Negative] linear correlation.
Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. (b) Would you say the correlation is low, moderate, or strong? positive or negative? a) moderate and positiveb) low and negative c) strong and positived) strong and negativee) low and positivef) moderate and negative As x increases, does the value of r imply that y should tend to increase or decrease? Explain. a) Given our value of r, y should tend to decrease as x increases.b) Given our value of r, y should tend to remain constant as x increases. c) Given our value of r, y should tend to increase as x increases.d) Given our value of r, we cannot draw any conclusions for the behavior of y as x increases.
A random sample of ten professional athletes produced the following data. The first row is the number of endorsements the athlete has and the second row is the amount of money made (in millions of dollars) by the athlete.   What is the linear correlation coefficient? Round to three decimal places. Number of Endorsements 0 3 2 1 5 5 4 3 0 4 Profit (in Millions) 2 8 7 3 13 12 9 9 3 10
(t Test (in Excel) for Two Samples with Unequal Variances) In an agricultural experiment, the effects of two fertilizers on the production of oranges were measured. Fourteen randomly selected plots of land were treated with fertilizer A, and 10 randomly selected plots were treated with fertilizer B. The number of pounds of harvested fruit was measured from each plot. Following are the results. Fertilizer A Fertilizer B 448, 478,482, 442,455, 480 ,457, 506, 436,478,453,489,400,444,495,438,481,501 470,444, 466, 427, 461, 431 Assume that the populations are approximately normal. Can you conclude that there is a difference in the mean yields for the two types of fertilizer? Use the α = 0.01 level of significance. Use Excel to perform the hypothesis test. State the null and alternate hypotheses that would be appropriate for this hypothesis…
Sketch a scatter plot and estimate the Pearson correlation . And then Compute the Pearson correlation. X VALUES: 0,2,1,1 | Y VALUES: 4,9,6,9
Weights of Vacuum Cleaners Upright vacuum cleaners have either a hard body type or a soft body type. Shown are the weights in pounds of a sample of each type. At a=0.05, can it be concluded that the means of the weights are different? Assume the variables are normally distributed and the variances are unequal. Hard body types Soft body types 21 15 16 20 24 13 11 13 alo 18 18 17 17 12 15 14 16 23 16 17 15 17 20 16 17 Send data to Excel Use for the mean weight of the hard body type. Part State the hypotheses and identify the claim with the correct hypothesis. HoHH not claim H : H, # H, claim This hypo test is a tal test. Part he critical value(s). Round the answer(s) to at least three decimal places, If there is more than one critical value, separate them with commas. Critical value(s):-2.306, 2.306 Part: 2 /5 Part 3 of 5 Compute the test value. Round the sample statistics to two decimal places and the final answer to at least three decimal places.

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