Assignment 6

Solve the following:

1.When Annie started attending her class in College, he was keen to arrive at school on time so he kept a record of his travel times to get to school each day for the first ten days. The number of minutes taken each day was:

55 69 93 59 68 75 62 78 97 83 .

Compute for variance and standard deviation.

2. The ages in days of samples of accounts receivable from two supplier companies 1 and 2, both of which extend 30 days credit, are shown below:

1 2

15 15 30 40

15 30 35 40

20 40 35 45

25 45 35 45

35 45 40 50

Using means and standard deviations of the two sets of data, compare the profile of the ages of accounts receivable of the two companies.

Quiz 6

1. The symbol for the population standard deviation is

a.