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brilliants [131]
3 years ago
13

A study reported that finger rings increase the growth of bacteria on health-care workers’ hands. Research suggests that 31 perc

ent of health-care workers who wear rings have bacteria on one or both hands, and 27 percent of health-care workers without rings have bacteria on one or both hands. Suppose that independent random samples of 100 health-care workers wearing rings and 100 health-care workers not wearing rings are selected. What is the standard deviation of the sampling distribution of the difference in the sample proportions (wear rings minus does not wear rings) of health-care workers having bacteria on one or both hands?
Mathematics
1 answer:
Lemur [1.5K]3 years ago
7 0

Answer:

C: square root 0.31 (0.69)/100 + 0.27(0.73) /100

Step-by-step explanation:

that's the answer I'm just to lazy to put the explanation but yeah, that's the answer

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Complete question:

Joelwants to buy a new tablet computer from a store having a 20% off sale on all tablet. The tablet he wants has an original cost of $190. He also wants to make sure he has enough money to pay the 5% sales tax.

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Step-by-step explanation:

Given the following :

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