Answer:
2.3%
Step-by-step explanation:
Imagine a standard normal curve with mean at 100 mg. One standard deviation above the mean would be 110 mg; two standard deviations 120 mg.
Draw a vertical line through x = 120. To answer this question, we must find the area under the curve to the left of x = 120 and then subtract this result from 1.00:
Using a calculator with probability distribution functions built in, we find the area to the left of x = 120 as follows:
normcdf(-100,120,100,10) = 0.977 => 1.000 - 0.977 = 0.023
The probability of extracting more than 120 mg of caffeine from 8 fluid ounces of coffee brewed in a drip machine is 2.3%
Answer:
x = 11
Step-by-step explanation:
x² = 121
You are solving for the variable, x. Note the equal sign, what you do to one side, you do to the other. Isolate the variable, x. Root both sides:
√(x²) = √(121)
x = √121 = √(11 * 11)
x = 11
x = 11 is your answer.
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Answer:
Bud have eaten 2 pieces as Bud and Dotti have eaten exact same amount.
Step-by-step explanation:
We have been given Dotti and Bud bought two identical watermelons
Dotti cut her watermelon into 3 pieces and ate 2 of the pieces.
Bud cut watermelon into 9 pieces
But Dotti and Bud have eaten exact same amount of watermelon
That means if Dotti have eaten 2 pieces then Bud would also have eaten 2 pieces out of 9.
Answer:
180 sq mm, 9 sq un, 8 sq un
Step-by-step explanation:
