A dieter believes that the average number of calories in a homemade peanut butter cookie is more than in a store-bought peanut butter cookie. Estimate the difference in the mean calories between the two types of cookies using a 90% confidence interval. The summary data are listed below.

n1= 40 x1_bar = 180 s1 = 2
n1= 45 x1_bar = 179 s1 = 4

Please answer the lower confidence bound first then the upper confidence bound second. Please round to two decimals on your answer

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

The box plot shows the number of raisins found in sample boxes from brand c and from brand d. each box weighs the same. what could you infer by comparing the range of the data for each brand? a) a box of raisins from either brand has about 28 raisins. b) the number of raisins in boxes from brand c varies more than boxes from brand d. c) the number of raisins in boxes from brand d varies more than boxes from brand c. d) the number of raisins in boxes from either brand varies about the same.

Shane can shovel the driveway in 4 hours, but if his sister it would take 2 hours. how long would it take taylor to shovel the driveway alone