Consider the following hypothesis test. H0: σ12 = σ22 Ha: σ12 ≠ σ22 (a) What is your conclusion if n1 = 21, s12 = 4.2, n2 = 26, and s22 = 2.0? Use α = 0.05 and the p-value approach. b)Repeat the test using the critical value approach.

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

Determine the standard form of the equation of the line that passes through (-2,0) and (8,-5)

If a revenue in total for a month was $9,950, fixed expenses were $9,000, and variable expenses were $300 what would be the total profit/ loss for the month?