Question
In: Statistics and Probability
A study was conducted by a local city council to determine if the salaries of librarians...
A study was conducted by a local city council to determine if the salaries of librarians from two neighboring cities were equal. A sample of 15 librarians from each city was randomly selected. The mean from the first city was $28,900 with a standard deviation of $2300. The mean from the second city was $30,300 with a standard deviation of $2100. Analysis the data using a hypothesis test and advise the council of your findings. Use a=0.05 .
a) Hypothesis :
b) Critical value (tcritical) :
c) Test statistic (tstat) and the decision about the test statistic: (reject or fail to reject Ho) :
d) Conclusion that results from the decision about Ho :
Solutions
Expert Solution
t test hypothesis for difference of means calculation.
orchestra answered 2 years agoRelated Solutions
2)A study was conducted by a local city council to determine if the salaries of librarians...
2)A study was conducted by a local city council to determine if
the salaries of librarians from two neighboring cities were equal.
A
sampleof15librariansfromeachcitywasrandomlyselected.Themeanfromthefirstcitywas$28,900witha
standarddeviationof$2300.Themeanfromthesecondcitywas$30,300withastandarddeviationof$2100.
Analysis the data using a hypothesis test and advise the council of
your findings.Use=0.05
.a)Hypothesis:
b)Critical value (tcritical):
c)Test statistic(tstat)and the decision about the test
statistic:(reject or fail to reject Ho):
d)Conclusion that results from the decision about Ho:
A study was conducted to determine if the salaries of librarians from two neighboring states were...
A study was conducted to determine if the salaries of librarians
from two neighboring states were equal. A sample of 100 librarians
from each state was randomly selected. The mean from the first
state was $29,100 with a standard deviation of $2,200. The mean
from the second state was $31,900 with a standard deviation of
$2,150. Test the hypothesis that there is no difference in the
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A study was conducted to determine if the salaries of librarians from two neighboring cities were...
A study was conducted to determine if the salaries of librarians
from two neighboring cities were equal. A sample of 15 librarians
from each city was randomly selected. The mean from the first city
was $28,900 with a standard deviation of $2300. The mean from the
second city was $30,300 with a standard deviation of $2100.
Construct a 95% confidence interval for mu 1 - mu 2.
2)A study was conducted to determine if the salaries of librarians from two neighboring cities were...
2)A study was conducted to determine if the salaries of
librarians from two neighboring cities were equal. A sample of 15
librarians from each city was randomly selected. The mean from the
first city was $28,900 with a standard deviation of $2300. The mean
from the second city was $30,300 with a standard deviation of
$2100.Construct a 95% confidence interval for μ1-μ2.
A) Hypothises :
B) Critical value (t-critical) :
C) Test statistic t-stat and the decision about the test...
2)A study was conducted to determine if the salaries of librarians from two neighboring cities were...
2)A study was conducted to determine if the salaries of
librarians from two neighboring cities were equal. A sample of 15
librarians from each city was randomly selected. The mean from the
first city was $28,900 with a standard deviation of $2300. The mean
from the second city was $30,300 with a standard deviation of
$2100.Construct a 95% confidence interval for μ1-μ2.
A) Hypothises :
B) Critical value (t-critical) :
C) Test statistic t-stat and the decision about the test...
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