Please show all of your work to receive full credit. Assume =0.05 for any questi

Question

Please show all of your work to receive full credit. Assume =0.05 for any questions of statistical significance.

For each of the following studies, state the null and alternative hypotheses (in words, not in mathematical symbols; 2 points each).

1.A dietetics researcher wants to know whether eating avocados every day lowers HDL cholesterol levels in men over 40. She measures the cholesterol levels in 100 men and then has them eat two avocados every day for a month. At the end of the month, she measures their HDL cholesterol levels again.

2.A basketball coach wants to know whether 30 minutes of silent meditation before games affects the free throw percentages of his players. He knows each player’s free throw percentage from the previous month and wants to compare those to the free throw percentages from a month in which the players meditate before every game.

3.An ice cream shop has been advertising a new flavor very heavily. The owner wants to know whether the rate at which customers buy that flavor is different from what would be expected if customers were simply choosing randomly.

4. Approximately 40% of registered voters in Minnesota are registered with the Republican Party. A political scientist wants to know whether people who are registered with the Republican Party are more likely to turn out to vote in municipal elections than people who are registered with other political parties.

Explanation / Answer

1) Ho: Eating avocados does not result in any difference between HDL levels before and after.

H1:  Eating avocados every day lowers HDL cholesterol levels in men over 40

2) Ho: 30 minutes of silent meditation before games doesnot affect the free throw percentages of players

H1:  30 minutes of silent meditation before games affects the free throw percentages of players

3) H0: the rate at which customers buy that flavor is not different from what would be expected if customers were simply choosing randomly.

H1: the rate at which customers buy that flavor is different from when customers were simply choosing randomly.

4) H0: people who are registered with the Republican Party are not more likely to turn out to vote in municipal elections than people who are registered with other political parties.

H1: people who are registered with the Republican Party are more likely to turn out to vote in municipal elections than people who are registered with other political parties.

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