Question

I have trouble interpreting stat questions into a null and alternate hypothesis, may I please have some assistance in answering question b or as much as you can.

Answer 1

For testing of hypothesis we consider null hypothesis as no difference and there should be alternative hypothesis of null which called as alternative hypothesis .

In alternative hypothesis we take hypothesis which we want to prove .

Example : we have some data of heights male and female students from any particular .We we want test the hypothesis that male students have more average height than female .In this case we write this problem is statistical language as

1= Mean of male students height ( For population)

2 =mean of Female students height (For population)

1= sample mean of male students height

2 = Sample mean of Female students height

Null Hypothesis ( H0) : 1 = 2 ( that there is no difference in Heights of male and female students)

Vs

Alternative Hypothesis ( Ha) : 1 > 2 ( that is average male height is more than average height of female students)

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In hypothesis we make  interpretation about population using some samples taken from population .

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