Reference no: EM13580338

Question 1: Twenty-one homes with living areas under 2000 sq ft have selling prices with a standard deviation of $32,159.73. Nineteen homes with living areas greater than 2000 sq ft have selling prices with a standard deviation of $66,628.50. At "alpha" = 0.05, test the claim that homes larger than 2000 sq ft have selling prices that vary more than that for the smaller homes.

Question 2: The table below shows the durations of eruptions, X (in minutes), and the time, Y, until the next eruption of the Old Faithful geyser. We wish to determine whether there is a linear relationship between the variables.

X	1.80	1.82	1.90	1.93	1.98	2.05	2.13	2.30	2.37	2.82	3.13	3.27	3.65
Y	56	58	62	56	57	57	60	57	61	73	76	77	77

a) Perform a hypothesis test using Table I and "alpha" = 0.01

b) Find y' when x = 2.57 and interpret.