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Juliette [100K]
3 years ago
9

Suppose that a recent poll found that 50 ​% of adults in a certain country believe that the overall state of moral values is poo

r. If a survey of a random sample of 15 adults in this country is conducted in which they are asked to disclose their feelings on the overall state of moral​ values, complete parts​ (a) through​ (e) below.
Mathematics
1 answer:
Bumek [7]3 years ago
4 0

Answer: 3.75

Step-by-step explanation:

P=0.50, n=15

np= 0.5x15 gives 7.5

n(1-p)= 15x(1-0.5)=7.5

Both are greater than 5

Then Mean, u=np;15x0.5=7.5

Standard deviation, √np(1-p)

15x0.5(0.5)= 3.75

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