The standard deviation of the population of adult female spine ...

[biggirl4568]

The standard deviation of the population of adult female spine lengths is .92 inches. A random sample of 40 women was selected and the mean spine length was found to be 26 inches.
 
  a. Calculate the standard error of the mean.
  b. Use the z test to determine whether this sample could be representative of a
   the general population of women whose mean spine length is known to be 24
   inches.

Question 2

The regression of Y on X allows for
 
  a. predictions of Y, given information on X
  b. predictions of X, given information on X, Y, and Z
  c. predictions of both X and Y, given information on a third variable
  d. none of these

[morganmarie791]

Answer to Question 1

a SEm=.15

Answer to Question 2

a

[biggirl4568]

Thank you!

[morganmarie791]

Happy to help