Answer to Question #287918 in Statistics and Probability for John

Question

Formulate the null hypotheses and alternative hypotheses for the following:

1.) Children who eat oily fish for certain period of time have a higher IQ.

2.) A researcher believes the coffee consumption increase the heart beat rate.

3.) A university is claiming that the passing rate of each Bachelor of Science and 

Nursing in the licensure examination is higher than 69% national passing rate.

4.) The average salary of the faculty in the college is 8,900 pesos. In another college, the average salary of 30 chosen employees is 9,500 pesos with standard deviation of 1750.

5.) A CEO of a company is claiming that 80% of the costumers are satisfied with the company service.

6.) A drug has developed a drug that can prevent colds. The company claims that the drug has the same effect in the men and women.

Answer 1

1) $H_0:$ Children who eat oily fish for certain period of time have IQ no more than Children who don't eat oily fish for this period of time.

$H_1:$ Children who eat oily fish for certain period of time have IQ greater than Children who don't eat oily fish for this period of time.

2) $H_0:$ People who consume coffee have the heart beat rate no more than People who don't consume coffee .

$H_1:$ People who consume coffee have the heart beat rate greater than People who don't consume coffee .

3) $H_0:$ The passing rate of each Bachelor of Science and Nursing in the licensure examination is no more than 69% national passing rate.

$H_1:$ The passing rate of each Bachelor of Science and Nursing in the licensure examination is greater than 69% national passing rate.

4) $H_0:$ The average salary of the faculty in the second college is no more than the average salary of the faculty in the first college.

$H_1:$ The average salary of the faculty in the second college is greater than the average salary of the faculty in the first college.

5) $H_0:$ Percent part of the costumers satisfied with the company service is 80%.

$H_1:$ Percent part of the costumers satisfied with the company service is not 80%.

6) $H_0:$ The drug has the same effect in the men and women.

$H_1:$ The drug has the different effect in the men and women.