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The Centers for Disease Control and Prevention noted that "the price of a pack of cigarettes went up 90% between 1997 and 2003."9 Suppose students in an introductory statistics course have been asked to identify the two variables of interest here, then tell which is explanatory and which is response, and whether each is quantitative or categorical. Which student has the correct answer? Adam: The explanatory variable is price of cigarettes, and it's categorical because it was summarized with a percentage. The response is year, and it's quantitative because it takes number values. Brittany: The roles are reversed: Year is the quantitative explanatory variable and price is the categorical response. Carlos: Year is the explanatory variable, and because just two values are possible, it's categorical. Price is the response and it's quantitative-90% just tells how much the price has changed from the year 1997 to the year 2003. Dominique: Both variables are quantitative because they both take number values; year is explanatory because it affects the price.
Find the probability that the injured person is female. P( P( )=? E. Find the probability that the injured person is female and was hurt at work. P( P( )=? F.
a brief description of the graph- a summarizing statement about the main finding shown in the 3 graphs
Suppose that a random variable X has a Binomial distribution with parameters n and p. Find E[(1/3)^X].
Let A and B denote genetic characteristics and suppose that the probability is 1/3 that an individual chosen will exhibit A, 2/5 that he or she will exhibit B. Assume that these characteristics occur independently. What is the probability that an ind..
A method of determining if relationships exist between two variables is:
Suppose that 5,000 sales invoices are separated into four strata. Stratum 1 contains 50 invoices, stratum 2 contains 500 invoices, stratum 3 contains 1,000.
In a nationwide survey of n = 1,030 adults, 6% answered yes to the question "During the last year did anyone break into or somehow illegally get into your home or apartment?"
According to National Vital Statistics, the average length of a newborn baby is 19.5 inches with a standard deviation of 0.9 inch.
At the Census Bureau Web site www.census.gov, you can view detailed data collected by the American Community Survey.
In a particular hospital, 5 newborn babies were delivered yesterday. Here are their weights (in ounces) 127,115,116,101,126 assuming that these weights.
During the busiest time of the day, customers arrive at the Daily Grind Coffee House at an average of 15 customers per 20-minute period.
Create Gantt chart using MSP. Suppose the 5 day workweek, compute critical path of the project.
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