Question
In: Statistics and Probability
Suppose the national average for fees paid on a parking ticket (not including any court involvement)...
Suppose the national average for fees paid on a parking ticket (not including any court involvement) is $25.25 with a standard deviation of $7. 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 $24.
Step 1 of 6: What type of hypothesis test should be performed here?
Step 2 of 6: State the null hypothesis.
Step 3 of 6: State the alternative hypothesis.
Step 4 of 6: State the p-value for your test.
Step 5 of 6: Choose the appropriate conclusion for this test with significance level 0.01.
Step 6 of 6: Interpret your conclusion
Solutions
orchestra answered 2 years agoRelated Solutions
The average annual cost (including tuition, room, board, books, and fees) to attend a public college...
The average annual cost (including tuition, room, board, books,
and fees) to attend a public college takes nearly a third of the
annual income of a typical family with college age children. At
private colleges, the average annual cost is equal to about to
about 60% of the typical family’s income. The following random
samples show the annual cost of attending private and public
colleges. Data are in thousands of dollars. Private Colleges 52.8
43.2 45.0 33.3 44.0 30.6 45.8...
The average annual cost (including tuition, room, board, books, and fees) to attend a public college...
The average annual cost (including tuition, room, board, books,
and fees) to attend a public college takes nearly a third of the
annual income of a typical family with college-age children.† At
private colleges, the average annual cost is equal to about 60% of
the typical family's income. The following random samples show the
annual cost of attending private and public colleges. Data are in
thousands of dollars.
Private Colleges
53.8
44.2
45.0
32.3
44.0
29.6
46.8
37.8
50.5
42.0...
The average annual cost (including tuition, room, board, books, and fees) to attend a public college...
The average annual cost (including tuition, room, board, books,
and fees) to attend a public college takes nearly a third of the
annual income of a typical family with college-age children.† At
private colleges, the average annual cost is equal to about 60% of
the typical family's income. The following random samples show the
annual cost of attending private and public colleges. Data are in
thousands of dollars.
Private Colleges
51.8
44.2
45.0
32.3
45.0
31.6
45.8
38.8
49.5
43.0...
The average annual cost (including tuition, room, board, books and fees) to attend a public college...
The average annual cost (including tuition, room, board, books
and fees) to attend a public college takes nearly a third of the
annual income of a typical family with college-age children
(Money, April 2012). At private colleges, the average
annual cost is equal to about 60% of the typical family's income.
The following random samples show the annual cost of attending
private and public colleges. Data are in thousands of dollars.
Click on the datafile logo to reference the data....
The average annual cost (including tuition, room, board, books, and fees) to attend a public college...
The average annual cost (including tuition, room, board, books,
and fees) to attend a public college takes nearly a third of the
annual income of a typical family with college-age children.† At
private colleges, the average annual cost is equal to about 60% of
the typical family's income. The following random samples show the
annual cost of attending private and public colleges. Data are in
thousands of dollars.
Private Colleges 52.8 42.2
46.0
34.3 45.0
29.6...
The average annual cost (including tuition, room, board, books, and fees) to attend a public college...
The average annual cost (including tuition, room, board, books,
and fees) to attend a public college takes nearly a third of the
annual income of a typical family with college-age children.† At
private colleges, the average annual cost is equal to about 60% of
the typical family's income. The following random samples show the
annual cost of attending private and public colleges. Data are in
thousands of dollars.
Private Colleges
51.8
43.2
46.0
34.3
44.0
30.6
45.8
36.8
51.5
42.0...
The average annual cost (including tuition, room, board, books, and fees) to attend a public college...
The average annual cost (including tuition, room, board, books,
and fees) to attend a public college takes nearly a third of the
annual income of a typical family with college- age children
(Money, April 2012). At private colleges, the average annual cost
is equal to about 60% of the typical family’s income. The following
random samples show the annual cost of attending private and public
colleges. Data are in thousands of dollars. a. Compute the sample
mean and sample standard...
Suppose you decide to buy a car for $30,635, including taxes and license fees. You saved...
Suppose you decide to buy a car for $30,635, including taxes and
license fees. You saved 9,000 for a down payment and can get a four
year car loan at 7.61%. Use PMT = P x r/n over 1-(1+r/n) to the
-n(t) power.
Find the monthly payment
Find the total interest for the loan
An airline sells 140 tickets for a flight. Suppose the probability that any given ticket holder...
An airline sells 140 tickets for a flight. Suppose the
probability that any given ticket holder actually shows up for the
flight is 95%. Find the probability that
a. No one shows up for the flight.
b. Everyone shows up for the flight.
c. Exactly 130 passengers show up.
d. At most 130 passengers show up.
e. At least 130 passengers show up.
f. Less than 130 passengers show up.
g. The number of passengers showing up is between 130...
Suppose that the national average for the math portion of the College Board's SAT is 548....
Suppose that the national average for the math portion of the
College Board's SAT is 548. The College Board periodically rescales
the test scores such that the standard deviation is approximately
100. Answer the following questions using a bell-shaped
distribution and the empirical rule for the math test scores.
If required, round your answers to two decimal places.
(a)
What percentage of students have an SAT math score greater than
648?
%
(b)
What percentage of students have an SAT...
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