A study was done to see if students who took AP Calculus be…
A study was done to see if students who took AP Calculus before taking the AP statistics course did better than students who did not take AP Calculus. They wanted to see if there was a difference in the AP Statistics exam scores. The p-value was zero. What does this mean?
Read DetailsA nutritionist was interested in studying American’s opinion…
A nutritionist was interested in studying American’s opinions about healthy eating. One hundred randomly selected people who were starting a diet were asked if they ate five servings of fruit or vegetables a day. After six months, the same 100 people were asked if they ate five servings of fruit or vegetables a day. Six months later “Yes, ate 5 servings” Six months later “No, did not eat five servings” Initial Response “Yes, ate five servings” 20 50 Initial Response “No did not eat five servings” 17 13 What is the sample proportion that did NOT eat 5 servings a day six months later?
Read DetailsA nutritionist was interested in studying American’s opinion…
A nutritionist was interested in studying American’s opinions about healthy eating. One hundred randomly selected people who were starting a diet were asked if they ate five servings of fruit and vegetables every day. After six months, the same 100 people were asked if they ate five servings of fruits and vegetables a day. What is the value of the test statistic? Six months later “Yes, ate five servings of fruit and vegetables” Six months later “No, did not” Initial Response “Yes, ate five servings” 44 14 Initial Response “No did not” 35 7
Read DetailsIn 2012, the General Social Survey included a question that…
In 2012, the General Social Survey included a question that asked participants how many hours they worked a week on household chores. Do females spend more hours working on household chores than males? Would this be an example of independent or dependent samples?
Read DetailsIn 2000, General Social Survey respondents were asked “How m…
In 2000, General Social Survey respondents were asked “How many hours did they spend on their personnel computer per week?”. The researchers were interested in seeing if Republicans (1) spent a different amount of time on the personnel computer then Democrats (2). For this hypothesis, the p-value was 0.9947. Interpret.
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