Question

In the academic year of 2010-11, it was found that the
national average for one year of tuition and fees at a private
institution of higher learning was $24,897 with a standard
deviation of $1,347. The current estimate for the 33 institutions
of higher learning in Louisiana indicates an average of $19,785 per
year. Answer the following and determine whether this is a
significantly lower expected cost.

Step 1 What type of hypothesis test should be performed here?

Step 2 State the null and alternative hypothesis.

Step 3 conclusion

Step 4 Choose your interpretation

Answer #1

College tuition: The mean annual tuition and fees in the
2013-2014 academic year for a sample of 14 private colleges in
California was $33,500 with a standard deviation of $7350. A
dotplot shows that it is reasonable to assume that the population
is approximately normal. Can you conclude that the mean tuition and
fees for private institutions in California is less than $35,000?
Use the a=0.10 level of significance and the P-value method with
the TI-84 Plus calculator.
1) State...

Suppose the national average for fees paid on a parking ticket
(not including any court involvement) is $24 with a standard
deviation of $6. Your local police department feels that they
charge less than this on average. Of the next 132 parking tickets
awarded, the average fee due is $23.
A)What type of hypothesis test should be performed here?
B)State the null hypothesis. and the alternative hypothesis.
C)State the p-value for your test.
D)Choose the appropriate conclusion for this test...

( please make answer clear and please answer quick)
College tuition: The mean annual tuition and
fees in the 2013 -2014 academic year for a sample of
14 private colleges in California was $33,500 with a
standard deviation of
$7350. A dotplot shows that it is reasonable to assume that the
population is approximately normal. Can you conclude that the mean
tuition and fees for private institutions in California is less
than $35,000? Use the =α0.10 level of significance and the...

During a given year, high school students earned a mean of
$1359. Assume that a sample consisting of 45 students at a school
was found to have earned a mean of $1382 with a standard deviation
of $210. Would a hypothesis test at the 0.01 significance level
suggest that the average earnings of this school were significantly
higher than the national mean? Formulate the alternative and null
hypotheses and do the necessary steps for hypothesis testing. Use
critical values to...

Please answer both!!
Suppose the national average dollar amount for an
automobile insurance claim is $805.66. You work for an agency in
Michigan and you are interested in whether or not the state average
is less than the national average. The hypotheses for this scenario
are as follows: Null Hypothesis: μ ≥ 805.66, Alternative
Hypothesis: μ < 805.66. You take a random sample of claims and
calculate a p-value of 0.02 based on the data, what is the
appropriate conclusion?...

A mortgage specialist would like to analyze the average mortgage
rates for Atlanta, Georgia. He collects data on the annual
percentage rates (APR in %) for 30-year fixed loans as shown in the
following table. If he is willing to assume that these rates are
randomly drawn from a normally distributed population, can he
conclude that the mean mortgage rate for the population exceeds
4.2%? Test the hypothesis at the 10% level of significance. (You
may find it useful to...

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