Recall that Amazon is technically performing two tests simultaneously, each measuring a different outcome: Ordered Product Sales (OPS) and Total Units Ordered (Units). What would be the null hypotheses and the alternative hypotheses for the arrow design A/B test?

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.