According to the Kelley School of Business Career Outcomes report for the class of 2018, the average starting salary of accounting major graduates is $51,330. Assume the distribution of salaries is bell-shaped and the population standard deviation is $3,300. 14 You obtain a random sample of 16 graduates. The probability that the sample mean salary is greater than $52,500 is . A 0.1020 B 0.0853 C 0.0778 D 0.0618 15 In repeated samples of size n = 16 graduates selected from this population, the fraction of sample means that fall within $49,830 and $52,830 is. A 0.9452 B 0.9312 C 0.9146 D 0.8948 16 In a state referendum the proportion of voters who favor the proposition to legalize marijuana is π = 0.52. A pollster polls a random sample of n = 500 voters. The probability that the poll will wrongly predict the defeat of the propositions is __. A 0.1841 B 0.2005 C 0.2177 D 0.2358

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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According to the Kelley School of Business Career Outcomes report for the class of 2018, the average starting salary of accounting major graduates is $51,330. Assume the distribution of salaries is bell-shaped and the population standard deviation is $3,300.
14	You obtain a random sample of 16 graduates. The probability that the sample mean salary is greater than $52,500 is ________.

A	0.1020
B	0.0853
C	0.0778
D	0.0618

15	In repeated samples of size n = 16 graduates selected from this population, the fraction of sample means that fall within $49,830 and $52,830 is______.

A	0.9452
B	0.9312
C	0.9146
D	0.8948

16	In a state referendum the proportion of voters who favor the proposition to legalize marijuana is π = 0.52. A pollster polls a random sample of n = 500 voters. The probability that the poll will wrongly predict the defeat of the propositions is ________.


A	0.1841
B	0.2005
C	0.2177
D	0.2358

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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