Mathematics, 15.09.2021 09:20 salgadoj6933
Below is the frequency distribution of the weights (in kg) of some sample of teen-agers.
Weight(in kg) f
[41-45] 2
[46-50] 5
[51-55] 7
[56-60] 4
[61-65] 1
[66-70] 1
1. How many respondents were in the study?
2. What is the mean weight of the group?
3. Which is the median class?
4. What is the lower boundary of the median class?
5. What is , the less than cumulative frequency below the before the class?
6. What is the frequency of the median class?
7. What is the width of the median class?
8. What is the median score?
9. Which is the modal class?
10. What is the modal score?
Answers: 2
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Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?
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Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?
Answers: 3
Below is the frequency distribution of the weights (in kg) of some sample of teen-agers.
Weight(in...
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