Question: A recent national survey found that high school students watched an av
ID: 3310324 • Letter: Q
Question
Question: A recent national survey found that high school students watched an average (mean) of 6.5 DVDs per month with a population standard deviation of .60. A random sample of 33 college students revealed that the mean number of DVDs watched last month was 5.80. At the .05 significance level, can we conclude that college students watch fewer DVDs a month than high school students?
(b) State the decision rule.
-Reject H1 if z < -1.65
-Reject H0 if z > -1.65
-Reject H1 if z > -1.65
-Reject H0 if z < -1.65
(d)What is your decision regarding H0 ?
-Reject H0
-Cannot reject H0
Explanation / Answer
The statistical software output for this problem is:
One sample Z summary hypothesis test:
: Mean of population
H0 : = 6.5
HA : < 6.5
Standard deviation = 0.6
Hypothesis test results:
Hence,
b) Decision Rule: Reject H0 if z < -1.65
c) Reject Ho
Mean n Sample Mean Std. Err. Z-Stat P-value 33 5.8 0.10444659 -6.7019898 <0.0001Related Questions
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