The mean height of american women in their twenties is about 64 inches, and the standard deviation is about 2.7 inches. the mean height of men the same age is about 69.3 inches, with standard deviation about 2.8 inches. if the correlation between the heights of husbands and wives is about r = 0.5, what is the slope of the regression line used to predict the husband's height (y) from the wife's height (x) in young couples?

slope= 0.52

Step-by-step explanation:

For American women

Mean (x) = 64 inches

Standard deviation (sx) = 2.7 inches

For American Men

Mean(ÿ) = 69.3 inches

Standard deviation (sy) = 2.8 inches

r = 0.5

Slope = ??

Husband height = Y

Wife height = X

the general equation of regression line

y = a + bx

The slope of the regression line is the linear correlation coefficient multiplied by the standard deviation for Y

b = r (sy/sx)

b = 0.5(2.8/2.7)

b = 0.52

The intercept a = ÿ - bx

a = 69.3 - 0.52(64)

a = 69.3 - 33.28

a = 36.02

The equation of the regression line y = a + bx

y = 36.02 + 0.52x

the most boring thing ever written

step-by-step explanation:

i am writing something. yes, i plan to make it the most boring thing ever written. i go to the store. a car is parked. many cars are parked or moving. some are blue. some are tan. they have windows. in the store, there are items for sale. these include such things as soap, detergent, magazines, and lettuce. you can enhance your life with these products. soap can be used for bathing, be it in a bathtub or in a shower. apply the soap to your body and rinse. detergent is used to wash clothes. place your dirty clothes into a washing machine and add some detergent as directed on the box. select the appropriate settings on your washing machine and you should be ready to begin. magazines are stapled reading material made with glossy paper, and they cover a wide variety of topics, ranging from news and politics to business and stock market information. some magazines are concerned with more recreational topics, like sports card collecting or different kinds of hairstyles. lettuce is a vegetable.

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3