Question
In: Statistics and Probability
The annual salaries (in dollars) of 14 randomly chosen fire fighters are listed. At α=0.05, is...
The annual salaries (in dollars) of 14 randomly chosen fire fighters are listed. At α=0.05, is there enough evidence to support the claim that the standard deviation of the annual salaries is different from $5700 Assume the population is normally distributed.
50,774 40,957 52,422 46,539 41,745 40,196 51,035
52,103. 43,862 34,870 35,087 28,218 32,662 37,916
Find the standardized test statistic for the chiχsquared2-test
Solutions
Expert Solution
We will find the standard deviation of the sample. Define the null and alternative hypothesis according to the mentioned claim. Find the critical value from the critical value table of chi-square. Make a conclusion from the test statistics and critical value.
orchestra answered 1 year agoRelated Solutions
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43, 54, 55, 51, 33, 33, 43, 54, 55, 26, 51, 43, 46
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Sample annual salaries (in thousands of dollars) for employees at a company are listed. 55 38...
Sample annual salaries (in thousands of dollars) for employees at a
company are listed.
55 38 53 58 41 41 55 38 53 29 58 55 43
(a) Find the sample mean and the sample standard
deviation.
(b) Each employee in the sample is given a $5000 raise. Find the
sample mean and the sample standard deviation for the revised data
set.
(c) each employee in the sample takes a pay cut of $2000 from the
original salary. Find the...
Sample annual salaries (in thousands of dollars) for employees at a company are listed. 54 49...
Sample annual salaries (in thousands of dollars) for employees at a
company are listed.
54 49 44 51 32 32 54 49 44 30 51 54 48
(a) Find the sample mean and the sample standard
deviation.
(b) Each employee in the sample is given a 6% raise. Find the
sample mean and the sample standard deviation for the revised data
set.
(c) To calculate the monthly salary, divide each original salary by
12. Find the sample mean and the...
Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities.
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39 37 35 28 20 19 17 16 15.5 14.9The range of the sample data is $ million. (Type an integer or
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Sample annual salaries (in thousands of dollars) for employees at a company are listed. 40 35 ...
Sample annual salaries (in thousands of dollars) for employees
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40 35 44 51 39 39 40 35 44 30 51 40 47 (a) Find the
sample mean and sample standard deviation. (b) Each employee in
the sample is given a $3000 raise. Find the sample mean and sample
standard deviation for the revised data set. (c) Each employee in
the sample takes a pay cut of $2000 from their original salary.
Find the sample mean...
Sample annual salaries (in thousands of dollars) for employees at a company are listed. 52 40 ...
Sample annual salaries (in thousands of dollars) for employees
at a company are listed.
52 40 47 63 33 33 52 40 47 25 63 52 53
(a) Find the sample mean and sample standard deviation.
(b) Each employee in the sample is given a $2000 raise. Find
the sample mean and sample standard deviation for the revised data
set.
(c) Each employee in the sample takes a pay cut of $5000 from
their original salary. Find...
Sample annual salaries (in thousands of dollars) for employees at a company are listed. 52 49 ...
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52 49 45 51 38 38 52 49 45 34 51 52 42
(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 the revised data set.
(c) To calculate the monthly salary, divide each original
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Sample annual salaries (in thousands of dollars) for employees
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42
51
57
47
41
41
42
51
57
31
47
42
46
(a) Find the sample mean and sample standard deviation.
(b) Each employee in the sample is given a
55%
raise. Find the sample mean and sample standard deviation for
the revised data set.
(c) To calculate the monthly salary, divide each original
salary by 12. Find the sample mean and sample standard...
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