Math Solutions

[See Steps] The file " Question 2 Data " contains some results from a statistically well conducted survey which looked at a random sample of manufacturing

Question: The file " Question 2 Data " contains some results from a statistically well conducted survey which looked at a random sample of manufacturing firms and a random sample of wholesale firms. The column labelled "Sector" indicates whether a firm is engaged in manufacturing (man) or wholesale (whole). The column labelled "<75%" indicates whether the firm spends less than 75% of its total revenue on salaries and wages (Y) or spends 75% or more of its total revenue on wages and salaries (N).

Produce a table like that outlined below with the counts of numbers of firms in each of the four blank cells shown.

Percentage of total revenue spent on salaries and wages

	Less than 75%	75% or more
Manufacturing
Wholesale

Use an appropriate statistical method to assess whether the survey provides enough evidence

to conclude, at the 5% level of significance, that the proportion of firms that spend more than 75% of their total revenue on salaries and wages is higher in manufacturing than in wholesaling.