Question

Two alternatives to buffer against psychological frailties in the interpretation of data are

• use of a specified p-value for the Type I error rate (typically 0.05), or

• routine use of confidence intervals.

Which of these two alternatives is better in your opinion? Why? maximum 250 words

Answer 1

ANSWER:

Confidence intervals are very good for two tailed test. That is alternative hypothesis shows that test is two tailed. Confidence interval provide a range of values for parameter to be estimated.

P-value can be used with any type of test. That is test can be right tailed, left tailed or two tailed.

So if reseacher need only test results so p-value should be used while if researcher need to be estimate the parameter then confidence interval should be used.