Choice C, because

So it's less than what she originally had (which isn't possible)
Answer:
7 because 24-10=4+3=7
Step-by-step explanation:
Answer:
Mean = 21.3
Standard Deviation = 2.48
Step-by-step explanation:
We are given the following in the question:
p = 71% = 0.71
Sample size, n = 30
We have to find the mean and the standard deviation of those that wear glasses.

Thus, the mean of those who wear glasses is 21.3

Thus, the standard deviation of those who wear glasses is 2.48
Answer:
HDE
Is there more than one answer choice?
Step-by-step explanation:
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