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2 answers:
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Answer: c. -2.15
Step-by-step explanation:
As per given we have:
Null hypothesis :
Alternative hypothesis :
let p be the proportion of firms in the manufacturing sector offer child-care benefits
A random sample of 390 manufacturing firms is selected and 295 of them offered child-care benefits.
sample size : n= 390
sample proportion :
Test statistic for proportion :
Substitute the values , we get
Hence, the value of test statistic = -2.15
Correct option is c. -2.15 .