In the summer of 2011, the Chicago libraries recorded the nu…
In the summer of 2011, the Chicago libraries recorded the number of participants per branch of the library versus the number of books read from that branch. They wanted to predict the number of books read at each branch based on the number of participants in the summer program. The least squares regression equation was books read = -657.0 +24.74 participants For one branch of the library the number of participants was 286. The number of books read was 5409. Find the residual.
Read DetailsA least squares regression equation was computed to predict…
A least squares regression equation was computed to predict the weight (lbs) of a 3 year old toddler based on the toddler’s height (in). The equation was yhat = yhat = 5.63 + 0.618x. (The data set included toddlers between roughly 24 and 48 inches.) Find the predicted weight of a toddler that was 27 inches tall.
Read DetailsThe cigarette taxes among the states have a mean of 168 cent…
The cigarette taxes among the states have a mean of 168 cents per pack. The values go from 30 to 440 cents. Assume that the data is normally distributed. Which of the following is a plausible value for the standard deviation?
Read DetailsA survey was conducted of college students in the US. They w…
A survey was conducted of college students in the US. They were asked to give their own height as well as the height that they would like their mate to be. Below is the least squares regression output for this data. The output below was conducted on only the male respondents. What is the predicted height for a mate of a 63 inch tall respondent?
Read DetailsBelow is a contingency table of results from data sampled fr…
Below is a contingency table of results from data sampled from students at Iowa State University between Spring 2004 and Spring 2007 (real data). The students were asked to give their gender and their eye color. Blue Brown Green Hazel Total Female 370 352 198 187 1107 Male 359 290 110 160 919 Total 729 642 308 347 2026 Based on this data, what is the conditional probability of male student having blue eyes?
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