The monthly precipitation in Florida has a mean of 100 mm. The values go from 50 mm to 181 mm. Assume that the data is normally distributed. Which of the following is a plausible value for the standard deviation?

Microsoft has a new online tool that tries to guess the age of the individual in the image. Individuals uploaded a photo of themselves and had the program determine their age (ToolAge).  The individuals also entered their real age (True Age). A regression model was made to predict true age based on the tool age. If only the data for the women was included, the least squares regression equation was  yhat = 16.29+0.44x Interpret the slope(if applicable).

For restaurants in Gainesville, the cost of a dinner has a mean of $50. The values go from 7 to 95 dollars. Assume that the data is normally distributed. Which of the following is a plausible value for the standard deviation?

Microsoft has a new online tool that tries to guess the age of the individual in the image. Individuals uploaded a photo of themselves and had the program determine their age (ToolAge).  The individuals also entered their real age (True Age). A regression model was made to predict true age based on the tool age. The least squares regression equation was  yhat = 13.28 +0.50x Interpret the slope (if applicable).

A least squares regression equation was calculated to predict the college gpa based on high school gpa. The least squares regression equation was yhat = 0.84x + 1.34.  Interpret the slope, if applicable.

A random number generator generates a number between 0 and 1. Assume that each number is equally likely between 0 and 1 – including decimals. What is the probability that a number is between 0 and 0.6?

The below stem and leaf plot states the length of eruptions (mins) for Old Faithful for a sample of 272 eruptions.    What is the minimum eruption length?

Suppose that in a unfair coin, the probability that “Head” occurs during a toss is 35%. Assume that we toss the coin 6 times, independently of each. What is the expected number of tosses that “Head” occurs?

Tests for allergies can be done in multiple ways. One way is through a blood test. ImmunoCAP is one of such tests. About 0.5% of adults have tree nut allergies at some level of severity. The test correctly identifies 94% of the time adults with a tree nut allergy and correctly identifies those without tree nut allergies 93% of the time.  What is the probability of an adult not having a tree nut allergy and the test being negative?

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 1053. The number of books read was 25803.  Find the residual.