Let’s say we are investigating if occupational stress impacts people differently based on age and we are going to study four age groups (people less than 30, ages 30 – 40, 41 – 55, and over 55). What are the levels of the factor? 

Suppose you have two brands (A and B) of thermometers, and each brand offers a Celsius thermometer and a Fahrenheit thermometer. You measure the temperature in Celsius and Fahrenheit using each brand of thermometer on ten different days. Based on the resulting data, you obtain two estimated regression lines — one for brand A and one for brand B. You plan to use the estimated regression lines to predict the temperature in Fahrenheit based on the temperature in Celsius. Based on the plots below, which brand will yield more precise future predictions?  Brand A Brand B

Dr. S and Dr. Smith are planning a road trip to see the Grand Canyon. They are trying to plan how much money they should set aside for gas. The scatterplot below was created using data Dr. S has kept about how much she has paid for gas based on the total miles driven. What does this relationship tell us about how much Dr. S should expect to pay for gas based on the miles driven?

Find the magnification M of the image in the previous problem and whether it is upright or inverted. Enter the answer for the magnification as a decimal to the hundredths place in the first blank after the letter M.  State whether the image is upright or inverted in the second blank after “image orientation”.  Use all lowercase letters in the second blank. ANSWERS: M = [magnification] image orientation = [orientation]  

Write in scientific notation

Fiction:  Identify the story based on this detail.  This story features a black box and pieces of paper.  

Calculate a 95% confidence interval for

Find the magnification M of the image in the previous problem and whether it is upright or inverted. Enter the answer for the magnification as a decimal to the tenths place in the first blank after the letter M.  State whether the image is upright or inverted in the second blank after “image orientation”.  Use all lowercase letters in the second blank. ANSWERS: M = [magnification] image orientation = [orientation]

We want to compare two population means. From the first population we obtain a sample of 10 subjects producing a sample mean of 33 and a sample variance of 1.5. Then from the second population we obtain a sample of 7 subjects producing a sample mean of 29 and a sample variance of 2. Can we using the following 

A study was done on m = 205 rocket hull portions made of aluminum and found a sample mean tensile strength of 187 ksi. A second study was done on n = 315 rocket hull portions mode of carbon fiber composite and found a sample mean tensile strength of 202 ksi. Assuming that the two distributions are Normal with