L9

Question 1

What are the tails in hypothesis tests

Answer 1

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Question 2

What is the critical value approach to hypothesis testing

Answer 2

Decide. Critical value based n some commonly used significance level and if your parameter is more extreme than the critical value fail the null hypothesis

Question 3

What are the two types of error in hypothesis testing

Answer 3

Type one false rejection and type two falsely admit the null hypothesis

Question 4

How can you decrease the chance of a false rejection in hypothesis testing

Answer 4

Decrease the significance level to make the critical value more extreme

Question 5

How do you decrease the chance of both errors in hypothesis testing

Answer 5

By increasing the sample size

Question 6

What is the p value in hypothesis testing

Answer 6

The likelihood that you would obtain the obtained sample mean if the null hypothesis is true. Aka observed probability of making type one error

Question 7

What is a .01 .05 and .1 for two tailed tests

Answer 7

2.58 1.96 1.645

Question 8

Go through the four step process of hypothesis testing

Answer 8

1 specify null and alternative hypothesis, 2 specify significance level, 3 calculate test statistics and p value, 4 state conclusions and interpret results

Question 9

Which letter denotes the value if the test statistic

Answer 9

Z

Question 10

What is the decision rule in hypothesis testing

Answer 10

If the p value is less than the significance level a reject the hypothesis