A researcher is testing the hypothesis that consuming a sports drink during exer

Question

A researcher is testing the hypothesis that consuming a sports drink during exercise will improve endurance. A sample of 50 male college students is asked to consume 4 ounces of the drink during breaks between performing three endurance tests. The average endurance score for the sample is 53. For the general population who have not consumed the drink, the average test scores average 50 with a standard deviation of 12. 1. State the null and alternative hypotheses is words. 2. State your decision regarding Ho and why, and 3. Please write your answer to (b) in the form of a conclusion including the statistical evidence as you would if you were writing a report in APA format

Explanation / Answer

1)here null hypothesis:Ho:there is no effect on average score of 50 after consumption of 4 ounce of drink during break.

alternate hypothesis: Ha:the score is increased from 50,after consumption of 4 ounce of drink during break.

2) here std error of mean =std deviation/(n)1/2 =12/(50)1/2 =1.697

therfore test stat z=(X-mean)/std error =(53-50)/1.697=1.7678

for abvoe test stat p value =0.0385

as p value is less then 0.05 ; we can reject Ho.

3) we have sufficient evidence to conclude that population average score is increased after consumption of 4 ounce of drink during break.

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