Weight = -91.4572+3.6248*1.38 = -86.455
So, 95 percent confidence interval = (weight+2*SER)-(weight-2*SER)
=-86.46-2*9.384 or -86.46+2*9.384
= -67.692 or -105.228
Suppose that a random sample of 184 twenty-year-old men is selected from a population and that...
2. Suppose that a random sample of 200 twenty-year-old-men is selected from a population and that these menís height and weight are recorded. A regression of weight on height yields Wdeight = 99:41 + 3:94 Height What is the regressionís weight prediction for someone who is 70 inches tall? 65 inches tall? 74 inches tall? A man has a late growth spurt and grows 1.5 inches over the course of a year. What is the regressionís prediction for the increase...
Suppose a random sample of 200 20-year-old men is selected from a population and their heights and weights are recorded. A regression of weight on height yields \ Weight = −99.41 + 3.94(Height),R2 = 0.81,SER = 10.2 SE for beta_hat_0=(2.15), SE for beta_hat_1= (0.31) where Weight is measured in pounds and Height is measured in inches. Two of your classmates differ in height by 2 inches. Construct a 99% confidence interval for the differences in weights.
Question 8 5 pts Suppose that a random sample of men is selected from a population and that these men's height and weight are recorded. A regression of weight on height yields Weight = -99.4 +3.94Height: where Weight is measured in pounds and Height is measured in inches. A man has a late growth spurt and grows 2 inches taller over the course of a year. What is the regression's prediction of the change in the men's weight? It would...
need help solving, n explainations prefered
uppose that a random sample of 900 20-year-old men is selected from a population and that these men's height and welight are recorded. A regression of weight on height yields. Weight -100.50 +424 x Height, R-0.50, SER=10.25 where Weight and Helight are measured in pounds and inches, respectively. Note: 1 pound kg, and 1 inch 2.54 cm. Awer Questions 20-23 0.453592 20. What is the region prediction for someone who is T2 inch tall?...
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A sample of 10 adult men gave the following data on their heights and weights. Height (inches) X 62 62 63 65 66 67 68 68 70 72 Weight (pounds) Y 120 140 130 150 142 130 135 175 149 168 a. Generate the scatter plot of this data and graph the regression line in your plot. Include a picture of this graph and explain your impression of how well the line fits the data. b. State the equation of...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard deviation 5 inches. (a) What is the probability that an 18-year-old man selected at random is between 67 and 69 inches tall? (Round your answer to four decimal places.) (b) If a random sample of thirteen 18-year-old men is selected, what is the probability that the mean height x is between 67 and 69 inches? (Round your answer to four decimal places.)
A sample of 10 adult men gave the following data on their heights and weights. Height (inches) X 62 62 63 65 66 67 68 68 70 72 Weight (pounds) Y 120 140 130 150 142 130 135 175 149 168 (2 points) Generate the scatter plot of this data and graph the regression line in your plot. Include a picture of this graph and explain your impression of how well the line fits the data. The X is the...