Recent content by sumans

The following table shows brand preferences against gender on the basis of a random sample of size 100 from population. It is intended to examine possible association between gender and brand preferences. Brand A Brand B Men 30 20 Women 20 30 At 5% level of significance will you...

The placement data of a business school suggest that the percentage of students securing a job with a multinational during the years 1996, 1997 and 1998 are 20%, 30% and 40% respectively. One student is chosen at random from the graduating batch of each year. Let X be the number of students...

On the basis of past data, suppose it is known that 0.5% of a components of a particular type manufactured by a firm are defective. The quality inspection procedure is such that 90% of the defective components will actually be found defective and 3% of the non-defective components will also be...