Business Statistics

"The chi-square is an extremely useful type of test instrument and is used to provide a probability basis for testing the variation between sample values and values obtained from a frequency model." Who said this?

"Two or more events are called mutually exclusive, if the occurrence of anyone of them excludes the occurrence of the other." This statement is given by

Match the items of List-I with the items of List-II and indicate the correct matching.

List-I	List-II
a. The parameters of the distribution are n and p	1. Normal distribution
b. The mean and the variance of the are identical distribution	2. Exponential distribution
c. The mean and the standard deviation of the distribution determines central location and spread respectively	3. Binomial distribution
d. The graph of the probability density function of the distribution slopes downward to the right from its maximum mean value	4. Poisson distribution

If the population value follows normal distribution then to have 95% confidence interval for estimate we use

If the decision processes are centralised at a higher level and the . . . . . . . . and authorities is not proper, then the information technology choice will weigh heavily in favour of the distributed data acquisition systems and the centralised high and information processing systems for decision support.

Each day a worker (M) produces 100 goods with a standard deviation of 5, while another worker (N) produces 200 goods with a standard deviation of 15. Which of the following statement is correct?

Given,

What will be the point 'B' represent?

Given

The above process indicates to

Which of the following statement is true?

There are 'm' number of favourable eases to event A and 'n' are non-favourable eases, both are equally likely and mutally exclusive, the probability of occurring the event A is $$P\left( A \right) = \frac{m}{{m + n}}.$$   This formula corresponds to which one of the following approaches to probability?