8. A machine producing a large spool of cable puts out 2.5 feet at a time. After each 2.5 feet of cable, there's a 1/1000 chance that the machine will cut the cable instead of continuing production. What is the expected length of the next
cable the machine produces?
a) 0.0025 ft. b) 400 ft. c) 2,500 ft. d) 6,250 ft. e)2,500,000 ft.

The sun a. will become a red giant within two to three million years b. is in its main sequence, which willlast thousands of years c. is in its main sequence, which will last billions of years. d. will explode as a supernova after its main sequence

Researchers pose the question: can shoe size be predicted from a woman's height? a random sample of 18 females and their shoe size versus height (in inches) gives the regression results shown in the table. predictor coeff se coeff t ratio p-value constant -45.74 32.58 -2.57 0.147 height 0.5943 0.2984 1.99 0.042 s = 3.2178 r-sq. = 18.9% r-sq. (adj) = 12.4% is there statistical evidence of a linear relationship between shoe size and height? no, because r2, the coefficient of determination, is too small no, because 0.147 is above any reasonable significance level yes, there is evidence at the 5% significance level yes, because, by any reasonable observation, taller women tend to have a larger shoe size

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