The weights of apples sold in a Toronto supermarket are independently distributedwith mean U and variance o. Spencer draws a random sample of n apples from thissupermarket, with their weights denoted as X1, X2, . . . Xn. Spencer uses theaverage weights of the first apple and the last apple as an estimator of u. What isthe sampling variance of Spencer's estimator?220212

Sampling distribution: If the population is normally distributed then the sampling distribution is…

Answered: The weights of apples sold in a Toronto…

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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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.
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A sample of 100 scores has a mean of 58, a variance of 160, and an estimated standard error of 4. Which of these values is guaranteed to increase if the sample size is decreased to 10? a. none of these is likely to be changed very much by decreasing n. b. the value of the variance c. the value of the mean d. the value of the standard error
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ASAP

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