alternate hypothesis

  1. P

    QUIZ HELP: Null and Alternate Hypothesis, P-value, critical value and test statistic

    My quiz is due tomorrow and 10% of my grade. I need help doing it because I'm pretty sure I have no idea what I'm doing. The first question is A researcher claims that the average age of a woman before she has her first child is greater than the 1990 mean age of 26.2 years, on the basis...
  2. H

    null and alternate hypothesis

    I'm getting confused over this. Lets say a man is debating whether he should buy a car or not. he is basing his decision on whether other people are buying cars too. if the percentage of other people buying cars is 15% or more he will buy a car but if it is less than 15% he will not. is the...