Question
In: Statistics and Probability
A recent national survey found that high school students watched an average of 6.8 DVDs per...
A recent national survey found that high school students watched an average of 6.8 DVDs per month with a population standard deviation of 0.5 DVDs. The distribution follows the normal distribution. A random sample of 36 college students revealed that the mean number of DVDs watch last month was 6.2. At the .05 significance level, can we conclude that college students watch fewer DVDs a month than high school students?
a. What is the null and alternative hypotheses?
b. Is this a two-tailed or one-tailed test?
c. Which distribution should we use? Normal or Student t
d. What is the critical value(s)? (the line in the sand values)
e. What is your test statistic value?
f. What is the p-value
g. What is your decision regarding the null hypothesis?
Solutions
orchestra answered 1 year agoRelated Solutions
A recent national survey found that high school students watched an average (mean) of 7.2 DVDs...
A recent national survey found that high school students watched
an average (mean) of 7.2 DVDs per month with a population standard
deviation of 0.90 hour. The distribution of DVDs watched per month
follows the normal distribution. A random sample of 35 college
students revealed that the mean number of DVDs watched last month
was 6.20. At the 0.05 significance level, can we conclude that
college students watch fewer DVDs a month than high school
students?
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A recent national survey found that high school students watched
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deviation of 0.90 hour. The distribution of DVDs watched per month
follows the normal distribution. A random sample of 43 college
students revealed that the mean number of DVDs watched last month
was 6.10. At the 0.05 significance level, can we conclude that
college students watch fewer DVDs a month than high school
students?
d.
What is your...
A recent national survey found that high school students watched an average (mean) of 6.6 DVDs...
A recent national survey found that high school students watched
an average (mean) of 6.6 DVDs per month with a population standard
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students revealed that the mean number of DVDs watched last month
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