Increasing numbers of businesses are offering child-care benefits for their workers. however, one union claims that fewer than 80% of firms in the manufacturing sector offer child-care benefits and performs a hypothesis test with a-0.05. a random sample of 390 manufacturing firms is selected and 295 of them offered child-care benefits. symbolically, the null and alternative hypothesis are as follows: hop -0.80 and hap< 0.80 what value of the 2-statistic should he report? round your standard error to four decimal places for calculations.
a. -0.0125
b. 0.0125
c. -2.15
d. 2.15

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 .

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