0.4129 0.5754 0.7123 0.9706 19. Hypothesis testing is part of __________________

Question

       0.4129
       0.5754
       0.7123
       0.9706

19. Hypothesis testing is part of ___________________. (Points : 4)

       Descriptive statistics
       Inferential statistics
       Pie chart
       Decision support systems

Question 20.20. The null hypothesis statement is the same as the alternate hypothesis statement.(Points : 4)

       True
       False

Question 21.21. The p-value is based on the assumption that the null hypothesis is false. (Points : 4)

       True
       False

Question 22.22. With hypothesis testing, do we ever Reject H1? (Points : 4)

       Yes
       No

Question 23.23. A Type I error is when we reject H0 when it is true. (Points : 4)

       True
       False

Question 24.24. A Type II error is when we do not reject H1 when it is true. (Points : 4)

       True
       False

Question 25.25. A Type II error is when we do not reject H0 when it is false. (Points : 4)

       True
       False

Question 3.3. Solve the problem.
A hypothesis test is performed to test the claim that a population proportion is greater than 0.7.
Find the probability of a type II error, , given that the true value of the population proportion is
0.72. The sample size is 50 and the significance level is 0.05. (Points : 4)

Explanation / Answer

Ans:

19)Descritive statistic

20)false

21)false

22)No

23)True

Type I error:

When the null hypothesis is true and you reject it, you make a type I error.

24)False

25)True

When the null hypothesis is false and you fail to reject it, you make a type II error.

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