A medical study on the systolic blood pressure readings (top number) on men over 40 years old results in the data below. The x-value is the number of years past 40 years old and the y-value is the systolic blood pressure reading. x y
8 63
11 77
14 86
17 90
20 140

Find the least squares regression line modeling this data. What is the slope of the regression line? Round your answer to three decimal places.

Julia measured the high temperature in her town for one week. using the chart above, find the mean absolute deviation for the high temperatures. round your answer to the nearest tenth. be sure to show your work for finding: the mean of the set of data the distance of each number from the mean the mean absolute deviation

Find the center of the circle that can be circumscribed about efg with e(4,4) f(4,2) g(8,2)

Arecent study focused on the number of times men and women who live alone buy take-out dinner in a month. assume that the distributions follow the normal probability distribution and the population standard deviations are equal. the information is summarized below. statistic men women sample mean 24.85 21.33 sample standard deviation 5.54 4.93 sample size 34 36 at the 0.01 significance level, is there a difference in the mean number of times men and women order take-out dinners in a month? state the decision rule for 0.01 significance level: h0: μmen= μwomen h1: μmen ≠ μwomen. (negative amounts should be indicated by a minus sign. round your answers to 3 decimal places.) compute the value of the test statistic. (round your answer to 3 decimal places.) what is your decision regarding the null hypothesis? what is the p-value? (round your answer to 3 decimal places.)