Assignment no.2 (Lessons 31-35)

 

Question 1:                                                                                                Marks: 5 +5=10

Calculate Mean and Variance for the given below sampling distribution of sample Means.

 

3

1/7

6

2/7

9

2/7

12

1/7

15

1/7

Total

7/7=1

 

 

 

Question 2:                                                                                                         Marks: =10

A random sample of 36 observations is drawn from a normal distribution with variance. Suppose that the sample mean is found to be  Find 96% confidence interval for populations mean  (Use table value as)

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