4.Calculation (1020'=20') Study the relationship between monthly household consumption expenditure y and monthly household disposable X in the community. Set the measurement model as: Y=B1+B₂X+μ Sample data Xi, Yi, xi, yi, Xiyi, xi, and sample mean value are shown in the following table. Xi Yi Xi yi Xiyi Xi 1 800 638 -1350 -945 1275750 1822500 2 1100 935 -1050 -648 680400 1102500 3 1400 1155 -750 -428 321000 562500 4 1700 1254 -450 -329 148050 202500 5 2000 1408 -150 -175 26250 22500 6 2300 1650 150 67 10050 22500 7 2600 1925 450 342 153900 202500 8 2900 2068 750 485 363750 562500 9 3200 2267 1050 684 718200 1102500 10 3500 2530 1350 947 1278450 1822500 Sum 21500 15830 1 1 49758000 74250000 Mean 2150 1583 1 1 1

Titles Notation v sample mean а. Ро coefficient of determination b. N C. s2 d. V population standard deviation d. o sample standard deviation e. o V sample size f. s mean of a sampling distribution of sample means g. r h. a population variance i. l the proportion found in Ho j. p sample proportion k. x? correlation coefficient l. po population mean m. OF population size n. Ha o. p2 the mean found in the null hypothesis р. р v chi-squared 9. п

How much would you expect systolic blood pressure to change if a person commits to reducing their cigarette consumption by 1 cigarette per day?

5. Bone mineral density (BMD) is a measure of bone strength. It is defined as the ratio of bone mass to the cross- sectional area of the bone that is scanned, and it is expressed in units of grams per square centimeter (g/cm²). Recent studies suggest that peak BMD in women is achieved between ages 15 and 40, and BMD declines after age 45. Decreased BMD is associated with increased risk of bone fracture. In a recent study, the impact of regular physical exercise on women in differing stages of BMD development was examined. A simple random sample of 59 women between the ages of 41 and 45 and with no major health problems were enrolled in the study. The women were classified into one of the two following groups, based on their level of exercise activity. • Sedentary: minimal participation in physical exercise in the past three years (This group contained 31 women.) • Walkers: walk at an aerobic pace at least 135 minutes per week during the past three years (This group contained 28 women.)…

eat out or in The overall change in the consumer price index is a weighted average of changes in various categories. on november 19, 2011 the boston globe reported the data displayed in figure 5.7.  the change in the CPI for food is a weighted average of the change in the cost of food at home and the change in the cost of food away from home. find the weights.

1. What is the value of the slope of the best fit trends line for the relationship between TDD and the depth of the active layer. 2. If α = 0.05, is this slope statistically significant? (yes/no) 3. Compute a new variable that states the depth of the active layer in inches. The conversion formula is: (depth in inches) = (depth in centimetres) / 2.54 What is the mean depth of the active layer, measured in inches?

I need help with this parts a,b, and c please