Average sales of Bata Shoe Co's multiple shops are Rs. 12,500 per month with a standard deviation of Rs. 4050. Find out what proportion of all shops sold between Rs. 12,500 and Rs. 16,550?
A. | Rs. 12,500 and Rs. 16,550 |
B. | Rs. 12,000 and Rs. 16,000 |
C. | Rs. 13,000 and Rs. 16,000 |
D. | Rs. 12,000 and Rs. 13,900 |
Option: A Explanation : (x - μ)/σ = (16550 - 12500)/4050 = 1.00 By referring to the table we find the area covered by the normal curve = 0.34134 or, 0.34134 x 100 = 34.134% Hence shop sold between 12500 and 16550. Hence the answer is (a). |
Situations in which ϰ2-test is not applicable is
A. | to test the discrepancies between observed and expected frequencies. |
B. | to test the goodness of fit. |
C. | in case of large sample, where sample size is greater than 30. |
D. | to determine association between two or more attributes. |
Option: C Explanation : |
The advantages of sampling is
A. | Extensive study |
B. | Intensive study |
C. | Information in brief |
D. | Non-destructive nature of certain tests. |
Option: B Explanation : |
SSAD stands for
A. | Structured System Analysis and Design |
B. | Structured System Analysis and Document |
C. | Structured Social Analysis and Document |
D. | Social System Analysis and Design |
Option: A Explanation : |
The _________ of r(correlation) is an amount which if added to and subtracted from the average correlation co-efficient produces amounts within which the chances are even that a co-efficient of correlation from a series error selected at random will fall
A. | Sample error |
B. | Probable error |
C. | Average error |
D. | Standard error |
Option: B Explanation : |