STA301 MCQs Lectures 1-45

Sta 301 all quiz lec 1 to 45 Date 20/dec/2009to29/dec/2010 Mr. super .Cool

1. A quantity obtained by applying certain rule or formula is known as

Estimate

Estimator

2. Criteria to check a point estimator to be good involves

Consistency Unbiasedness Efficiency

Above all pg 258

3. The F-distribution always ranges from:

0 to 1 0 to -8

-8 to +8

0 to +8

4. 1-a is the probability of ......

Type 1 error Rejection region Acceptance region Type 2 error

5. Parameter is a ………quantity.

Constant

Variable

6. To find the estimate of a parameter …….methods are used.

Two Three Four

Many

7. A failing student is passed by an examiner. It is an example of:

Type I error

Type II error

Correct decision No information regarding student exams

8. For two mutually exclusive events A and B, P (A) = 0.2 and P (B) = 0.4, then P(AUB) is:
9. 8
10. 2

0.6

1. 5

P(AUB)=P(A)+p(B)=0.2+0.4=0.6

9. An urn contains 4 red balls and 6 green balls. A sample of 4 balls is selected from the urn
10. A standard deck of 52 cards is shuffled. What is the probability of choosing the 5 of diamonds:

11. If P(AnB) = 0.12 P (A) = 0.3, find P (B) where ‘A’ and ‘B’ are independent:

1. 1
2. 2
3. 3

0.4

0.3X0.4=0.12

12. The mean deviation of the normal distribution is approximately:

7/8 of the S.D

4/5 of the S.D

3/4 of the S.D

1/2 of the S.D

13. We use the Poisson approximation to the binomial when:

p is 0.01 or less & n is 10 or more

p is 0.05 or less & n is 20 or more pg221

p is 0.04 or less & n is 15 or more

p is 0.02 or less & n is 10 or more