Questions and Answers of Statistics Econometrics

It has been reported that 30 percent of all couples who adopt a child because of troubles conceiving a child eventually do conceive a child after the adoption, suggesting that adoption makes
A study in one state compared the traffic fatality rates (number of fatalities per miles driven) on highways with 55, 65, and 75 miles per hour speed limits. They found that highways with a 75 mph
How might a statistician challenge this argument that appeared The New York Times [10] in January 2014?Punishment and surveillance by itself causes people to withdraw from political
A classic test lets a monkey choose M&Ms until the researcher identifies three colors (say blue, red, and green) that the monkey seems to prefer about equally. The monkey is then offered a choice
J. B. Rhine’s book New Frontiers of the Mind reported results from his ESP experiments. The New York Times science editor was enthusiastic. He noted that some people dismiss Rhine’s results by
Explain why this is misleading: In 70 percent of all traffic accidents, the driver is less than 10 miles from home. These data show that drivers who are close to home feel safe and tend to relax and
In the gambling game Chuck-A-Luck, a player can bet $$1$ on any number from 1 to 6. Three dice are thrown and the payoff depends on the number of times the selected number appears. For example, if
A routine examination discovers a lump in a female patient’s breast. Only 1 out of 100 such lumps turns out to be malignant, but, to be safe, the doctor orders a mammogram X-ray test. If the lump
You are going to do an experiment in which you roll several six-sided dice and record the sum of the numbers on these dice. You will repeat this experiment several times and make a histogram of the
Use the data in Table 3.2 to calculate the annual rate of increase in the CPI over the 14-year period from December 2000 to December 2014.Table 3.2 1981 8.9 1998 1.6 1982 3.8 1999 2.7 1983 3.8 2000
In Little League baseball, the highest level is the majors and the next highest level is the minors. In the 2013 season, Claremont Little League had enough players to form six majors teams and six
In a computer game, the player is shown (in random order) a sequence of characters that are yellow, green, blue, red, or black. The characters are themselves:(a) Neutral (OOOOO written in
A study of the effect of college education on income used 1990 and 2010 US Census data. The study looked at: (a) women in the 1990 Census who were between 28 and 32 years old and were also the first
Which of these data are categorical and which are numerical?a. A cell phone’s brand.b. A cell phone’s estimated battery life.c. A cell phone’s screen size.d. A cell phone’s carrier.