2 A sample of 212 commercial businesses was surveyed for recycling one commodity; a commodity here means any one type o

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2

A sample of 212 commercial businesses was surveyed for recycling
one commodity; a commodity here means any one type of recyclable
material such as plastic or aluminum. Table 11.36 shows the
business categories in the survey, the sample size of each
category, and the number of businesses in each category that
recycle one commodity. Based on the study, on average half of the
businesses were expected to be recycling one commodity. As a
result, the last column shows the expected number of businesses in
each category that recycle one commodity. At the 5% significance
level, perform a hypothesis test to determine if the observed
number of businesses that recycle one commodity follows the uniform
distribution of the expected values.

































Business Type

Number in class

Observed Number that recycle one
commodity

Expected number that recycle one commodity



















Office
35
19
17.5



















Retail/Wholesale
48
27
24



















Food/Restaurants
53
35
26.5



















Manufacturing/Medical
52
21
26



















Hotel/Mixed
24
9
12