Roughly 95% of the data lies within 2 standard deviations of the mean.
So (100% - 95%)/2 = 2.5% of the data lies within each tail.
This means roughly 2.5% of the data is in the left hand tail.
Answer:
9 and 15
Step-by-step explanation:
lowest common multiple 45
9, 18, 27, 36, 45, 54, 63, 72, 81, 90
15, 30, 45
HCF
3 X 3 = 9
3 X 5 = 15
3 is hcf
Answer:
a) 0.6
b) 0.3
Step-by-step explanation:
Since we are taking 3 from a sample of 5 without replacements, we would have 5 choices for the first pick, 4 choices for the 2nd pick and 3 choices for the 3rd pick. The total possible number of ways to do this is:
5*4*3 = 60 ways
As order does not matter (GLS is the same as GSL), we divide this by the number of ways the 3 picks can be arrange, which is 3*2*1 = 6
So there are 60/6 = 10 possible samples
(a) If the governor is included in the sample, then we only have 4 choices for the 2nd pick and 3 choices for the 3rd pick. And there are also 2 ways to arrange this.
So there are 4*3/2 = 6 possible samples. The probability of this happening is 6/10 = 0.6
(b) If G and A are included, we only have 3 choices for the last pick. So the probability of this to happen is 3/10 = 0.3
In this question there are all the required information's. Using those information's the answer to the question can be easily found. It is given that the teacher travels for 500 meters within a time of 500 seconds. Now we have to find the average velocity at which the teacher covered the distance.
We already know that
Average Velocity = Distance traveled/ Time taken
Now we can put all the given information's in this equation and get the required answer.
Average Velocity = 500/500 meter/second
= 1 m/s
So the teacher travels at an average velocity of 1m/s.
Change 65% into a decimal by moving the decimal point two places to the left. Then multiply .65 by 39 to get Your answer = A. 25.35 :)
