You first
When four golfers are about to begin a game, they often toss a
tee to randomly select the order in which they tee off. What is
the probability that they tee off in alphabetical order?
This is about the number of different permutations there are
Identical twins come from a single egg that splits into two embryos, and
fraternal twins are from separate fertilized eggs. The table entries reflect
the principle that among sets of twins, 1/3 are identical, and 2/3 are
fraternal (Northern California Twi
Future College Students
The national average for the math portion of the College Boards SAT
test is 515 (The World Almanac, 2009). The College Board periodically
rescales the test scores such that the standard deviation is
approximately 100. Answer the fo
MARCH MADNESS
A sample of NCAA college basketball game scores provided the
following data. (a) Compute the mean and standard deviation for the
points scored by the winning team. (b) Assume that the points scored
by the winning teams for all NCAA games fol
In a recent election, the mayor received 60% of the
vote. Last week, a survey was undertaken that asked
100 people whether they would vote for the mayor.
Assuming that her popularity has not changed, what
is the probability that more than 50 people in the
Sociological Methods and Research published a study in which the
authors examined the response rate to surveys. They found the
following distribution
Responded
Refused
18-21
73
11
22-29
255
20
Ages
30-39
40-49
245
136
33
16
50-59
138
27
60+
202
49
A
A pha
It is all about location. Or size?
Use the sample data for real estate to
determine the association between the
house prices and dwelling size.
Complement your answer by using a
scatter diagram
Price
Bedrooms
263.1
182.4
242.1
213.6
139.9
245.4
327.2
271.
In older cities across the country, infrastructure is
deteriorating, including water lines that supply homes and
businesses. A report to NYC council stated that there are
on average 30 water line breaks per 100 kilometers per
year in the city. Outside NYC
And it all Started with a Big Bang
The Big Bang Theory is one of the most watched
programs on network television. Data shows the
number of viewers in millions for the first episodes of
the 20112012 season (The Big Bang Theory
website, April 17, 2012).
Que
The table below shows how many days of the year a student had x numbers of beers. As seen, there were 40
days last year in which this student did not have any beers, and 36 in which that student had a total of 10
beers. On average, how many beers does the
The sample contains contributions (in dollars) made to the
two presidential candidates in a recent election. All
contributions are from the same ZipCode as the author,
who writes for the Huffington Post. Do the contributions
appear to favor either candida
The "American Princess"
Number of people Googling "Kim Kardashian" per second.
Past data reveals that, on average (E(x), 6 people Google
her name per second. Assuming that people Google her
name randomly (i.e. hard to determine the many reasons
why), and
Freshmen 15: The legend
According to the `freshman 15" legend, college freshmen
gain 15 lbs (6.8 kgs) during their freshman year. Listed are
the amounts of weight change in kgs for a simple random
sample of freshmen included in a study by Hoffman,
Policas
Getting Caught
VU police randomly selects freshmen students walking back to
campus Friday nights. There is a 10% probability that freshmen
students will drink on a given Friday, but it is more likely that
freshmen students never drink (90%). Selecting 3 s
Some coffee?
The results of Accounting Principals latest
Workonomix survey indicate the average that
American workers spend on coffee annually (The
Consumerist, January 20, 2012). To determine if
there are any differences in coffee expenditures by
age gro
Cheaper Goods
Canadians who visit the US often buy liquor and cigarrets because they
are cheaper here. If a Canadian visits for more than 2 days are allowed
to bring back 1 bottle of liquor and one carton of cigarrettes. The
Canadian customes have found t
Catering Event
The table shows the wages of workers
and the number of hours worked per
worker in one catering event.
Considering the total number of hours
worked by all workers, what was the
average cost of an hour worked?
Worker
Waiter
Manager
Cook
Clean