Amy bought 3 pounds of lemons at 2$ per pound, a box of rice for 4$ and 7 frozen dinners for 3$ each what is the change in the a
2 answers:
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Answer: 0.84134
Step-by-step explanation:
We need to find the z-score for the given information first since this will help us find the probability. The formula for this is
Z score =
We have
66 inches (the raw score)
70 inches (the population mean)
= 4 inches (the standard deviation)
This gives
Z score = =
If you use a calculator, or a Z-score table then P(x > Z) is just P(Z > -1) which gives a probability of 0.84134.