Choose the fraction that is equal to:
0.63
A 7/9
B 7/11 C 2/3 D 63/100

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36