Question
In: Statistics and Probability
1. The director of medical services wants to conduct a hypothesis test, using a sample of...
1.
The director of medical services wants to conduct a hypothesis
test, using a sample of emergency response times, to determine
whether or not the service goal of 12 minutes or less is being
achieved. A random sample of 40 emergencies was taken. The average
response time was 13.25 minutes with a standard deviation of 3.2
minutes. Conduct the hypothesis test with alpha = 0.05 and draw
your conclusion.
Solutions
Expert Solution
We calculate the test statistic using the
formula mentioned. The critical value is obtained from STATKEY
(image attached for reference). We compare the test statistic with
critical value and make the required conclusion.
orchestra answered 2 years agoRelated Solutions
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Please make sure you solve in R-studio. Solving without giving
me R-codes will not help me. It would also help if you write a
brief explanation of what you did. Thanks in advance!
Exercise 1. Given the following null and alternative hypotheses, conduct a hypothesis test using an alpha...
Exercise 1. Given the following null and alternative hypotheses,
conduct a hypothesis test using
an alpha equal to 0.05. (Note: The population standard
deviations are assumed to be known.)
?0: ?1 – ?2 ≤ 0
?a: ?1− ?2> 0
? = 0.05
The sample means for the two populations are shown as
follows:
Sample 1
Sample 2
n1= 40
n2= 50
x1= 144
x2= 129
s1= 11
s2= 16
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