Well since right now the average is 74.4, the tenth student would need to earn an 80 so the team got exactly an average of 75
Answer:
2.35%
Step-by-step explanation:
First, calculate the difference between mean and the months in the problem:
first month :59 – 26 = 33
second motnh: 59 – 37 = 22
Since standard deviation is 11 months, for the first month is a difference of 3 standard deviation and for the second is 2 standard deviation.
the 68-95-99.7% rule establish that:
1 standard deviation means a 68% of total area under the normal distribution. On one side is half = 34%.
2 standard deviations means a 95% of total area under the normal distribution. On one side is half = 47.5%.
3 standard deviation means a 99.7% of total area under the normal distribution. On one side is half = 49.85%.
The difference between 3 and 2 standard deviation is
49.85 – 47.5 = 2.35%
The answer is 2.35% of cars that remain in service between 26 and 37 months
You would make it into an equation then solve it after creating that equation. When you hear the word "each" that should give you a clue or a sense that should be a variable. So in this case it would be:
17x+21=157
Then you would solve it from there. Once you find x you'll know how many workbooks Norwood Middle School purchased.
The average change in temperature per hour was 6 degrees
Explanation- There are 9 hours between 6:00AM and 3:00PM.
As well as a increase of 54 degrees in those 9 hours.
54/9=6
:)
Answer:
387 ft³
Step-by-step explanation:
Given
Base area of the truck = 22 1/2 square feet
Height of the truck = 17 1/5 feet
Volume of the space = Base Area * Height
Volume of the space = 22 1/2 * 17 1/5
Volume of the space = 45/2 * 86/5
Volume of the space = 3870/10
Volume of the space = 387 ft³
<em>hence he volume of the space is 387 ft³</em>