Answer:
5.81%
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
20% = 0.2
80 x 0.2 = 16
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Answer:
The alternative hypothesis is
.
The critical value is 
Step-by-step explanation:
It is claimed that proportion in favor of proportion A is greater than 60%.
This means that at the null hypothesis, we test if the proportion is of at most 60%, that is:

At the alternative hypothesis, we test if the proportion is more than 60%, that is:

What is (are) the critical value?
The critical value is the value of Z with a p-value 1 subtracted by the standard significance level of 0.05, since we are testing if the mean is more than a value, so, looking at the z-table, 
THE ANSWER IS 13.3 BECAUSE YOU HAVE TO DIVIDE 40/3 AND GET13.3
Answer:
c=13.42
Step-by-step explanation:
