Reference no: EM13576597

The managers of a food company are interested in determining the effect on their sales of a competitor"s television advertisements.

An analysis of sales records for the last 120 weeks gives the following results:

		Level of sales		(no. of weeks)
	Low	Medium	High	Total
Competitor advertised	$32	$14	$18	64
Competitor did not	21	$12	$23	56
advertise
Total	53	26	41	120

Assuming that these past data are a reliable guide to the future, determine the probability that next week:

(a) The competitor will advertise;

(b) Sales will not be high;

(c) Medium or high sales will be achieved;

(d) Either the competitor will advertise or only low sales will be achieved;

(e) Either the competitor will not advertise or high sales will be achieved.