Why do we use SPSS to calculate a factorial ANOVA?

In ANOVA,the F-test is the ratio of two sample variances.In the one-way ANOVA (completely randomized design) ,the variance used as a numerator of the ratio is:

A) mean square for treatments.
B) mean square for error.
C) total sum of squares.
D) None of these choices.

Inferential statistics tell us that as long as we are prepared to accept a known level of uncertainty in our projections, ______.

A) we do not need huge sample sizes
B) we do need huge sample sizes
C) sample size is irrelevant
D) we can use any sampling method

Lydia purchased a $100,000 150-day T-bill when the prevailing yield on T-bills was 4.5%. She sold the T-bill 60 days later when the prevailing yield was 4.2%. What simple interest rate did Lydia earn during the 60-day period? (Taken from CIFP course materials.)

Rewrite the expression using rational exponents. $\frac{\sqrt[3]{x^5}}{\sqrt[3]{x^7}}$

A) $\frac{1}{x^{2/3}}$
B) $x^3$
C) $\frac{1}{x^2}$
D) $\frac{1}{x^3}$
E) $x^2$

​The markup percent is based on cost. Compute the missing terms.
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