2nd Year Statistics Chapter 4 TestHypothesis Testing

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. When the null hypothesis is , the alternative hypothesis for a "less than" test of hypothesis is:

   1. 

   2. 

   3. 

   4. 

2. The critical region for  when  is:

   1. 

   2. 

   3. 

   4. 

3. For a particular hypothesis test,  and . The power of the test is equal to

   1. 0.14

   2. 0.90

   3. 0.95

   4. 0.25

4. A good scheme of education is rejected by Education Department. It is an example of:

   1. Type I error

   2. Type II error

   3. Correct decision

   4. None of these

5. To test hypotheses about the mean of a normal population with a known standard deviation, we can compare:

   1. The observed value of  with the critical value of 

   2. The observed value of  with the critical value of z

   3. The observed value of z with the critical value of z

   4. Either (a) or (c)

6. For , the critical values of z for two-tailed test are equal to:

   1. -2.58 and 2.58

   2. -2.33 and 2.33

   3. -1.645 and 1.645

   4. -1.96 and 1.98

7. The hypothesis which is to be tested for possible rejection is:

   1. Simple

   2. Composite

   3. Null

   4. Alternative

8. If a hypothesis does not completely specify the value of all parameters, then it is called:

   1. Composite hypothesis

   2. Null hypothesis

   3. Alternative hypothesis

   4. Simple hypothesis

9. For , the critical values of z for two-tailed test are equal to:

   1. -1.96 and 1.96

   2. -2.33 and 2.33

   3. -1.645 and 1.645

   4. -1.28 and 1.28

10. 'A deserving player is not selected in the team'. It is an example of:

    1. Type I error

    2. Type II error

    3. Correct decision

    4. None of these