Ken jumps 1 1/5 metres and Steve jumps 1.5 metres. How much more does Steve jump?
2 answers:
Answer: 0.3 meters.
Step-by-step explanation:
First we need to turn one of those into a fraction or decimal to make things easier for us. Lets turn into a decimal.
1 1/5 as a decimal is 1.2.
Now we compare the two
Now we need to subtract 1.5 by 1.2 to see how much more he jumps by.
Steve jumps more by 0.3 meters.
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Answer: About 191 students scored between a 60 and an 80.
Step-by-step explanation:
Given : A set of 200 test scores are normally distributed with a mean of 70 and a standard deviation of 5.
i.e. and
let x be the random variable that denotes the test scores.
Then, the probability that the students scored between a 60 and an 80 :
The number of students scored between a 60 and an 80 = 0.9544 x 200
= 190.88 ≈ 191
Hence , about 191 students scored between a 60 and an 80.