BUAD 806 INDIVIDUAL ASSIGNMENT

1. A survey of 500 randomly selected customers based on their expenditure patterns was carried out and the data were found to be normally distributed with a mean of N50 and a standard deviation of N15. Use the information to answer the following questions:

The probability that any customers selected at random:

1. a) spends more than N80 per week,
2. b) spends less than N50 per week.

The percentage of customers who are expected to:

1. c) spend between N30 and N80 per week,
2. d) spend between N55 and N70 per week.

The expected number of customers who will:

1. e) spend less than N70 per week,
2. f) spend between N50 and N57.50 per week.