Math-stat

Twenty-five people have their cholesterol measure before eating a Big Mac and again after eating a Big Mac. On average, does eating a Big Mac increase cholesterol? 

• Matched Pairs T
• Two-Sample T

What is the difference in average ages at which teachers and plumbers retire?

• Matched Pairs T
• 2-Sample T

We want to test whether proportions from two populations are different from each other.  What are the appropriate null and alternative hypotheses? 

• a)H0 : p̂1 = p̂2, Ha : p̂1 ≠ p̂2
• b)H0: p1 ≠ p2, Ha : p1 = p2
• c)H0: p1 = p2, Ha : p1 ≠ p2

The null hypothesis is represented by:

• Ha

• Ho

• t*

• HP

• μ

When p-value is greater than alpha we:

• Accept Ho
• Accept Ha
• Fail to reject Ho
• Reject Ho

The null hypothesis always contains a(an):

• < or >

• =

• >

• = or >

• ≠