E pi and F pi and (for third one) are correct answers
Answer:
Step-by-step explanation:
B
The answer here would be <span>ON/C 6 8 – 5 – 6 2 . 5 0 + 7 5 =</span>
The interest rate would be 5%
1. Mean.

2. <span>Standard deviation.
First we have to square each value and calculate the mean of that squares:

so the variance:

and the standard deviation:

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