Question

1.I had a sample size of 10 to represent all students in a school district and accepted the null hypothesis. What type of error have I made and why?

2. If I set my level of significance at .10 and rejected the null hypothesis, what type of error have I made now and why?

3. What can I do to fix what went wrong with question 2.

Answer 1

1)as failure to rjeect null hypothesis wen it is false ; then it can lead to type II error,

threfore if null is false ; you have made a type II error ; otherwise it is a correct decision

2)

rejecting null hypothesis when it is true leads to type I error

therefore if null is true; you have made a type I error

3) this can be fixed by resampling ; or increasing the sample size ; also as alpha is equivalent to probabiltiy of type I error ;therefore to reduce alpha also can avoid this