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SAT, 24.11.2019 17:31 aubreyfoster

The marketing manager of zanga zanga enterprise claims that the performance of sales team in lusaka and choma is the same. she collected sales achieved in three products in lusaka and choma. the following are the sales gathered:

a
b
c

lusaka
30
45
55

choma
35
30
65

is there sufficient evidence to justify the marketing manager’s claim at level of significance of 1%?

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