Answer: Second Option
68%
Step-by-step explanation:
First we calculate the Z-scores
We know the mean and the standard deviation.
The mean is:
The standard deviation is:
The z-score formula is:
For x=24 the Z-score is:
For x=30 the Z-score is:
Then we look for the percentage of the data that is between deviations from the mean.
According to the empirical rule 68% of the data is less than 1 standard deviations of the mean. This means that 68% of pizzas are delivered between 24 and 30 minutes
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Answer:
x=28
Step-by-step explanation:
Answer:
9x2−x4+y(x2+9)2x(x2+9)2
Step-by-step explanation:
Answer:
3n-2
Step-by-step explanation:
i just got done doing that test lol