<span>-2.25/x = 9/6
9x = (-2.25) * 6
9x = - 13.5
x = -13.5 / 9
x = -1.5</span>
Answer:
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Step-by-step explanation:
Answer:
First we need to find the mean and standard deviation of the given data.
The mean and standard deviation are given below:
We have:
Therefore, the percentage of values that lies within one standard deviation of the mean is:
The expected percentage of values within one standard deviation of the mean according to normal distribution is 68%.
Therefore, the observed percentage of values within one standard deviation of the mean is much higher than the expected percentage of a normal distribution.
Answers Work
a.60 miles in one hour 420/7
b.12 customers in one day 360/30
c.2.5 meters in I second 40/16
d.$1.59 for 1 pound 7.96/5