The answer is 100 degrees Celsius.
Answer:
3.39
Step-by-step explanation:
We will use SD formula to find our answer.
= Standard deviation.
= Mean.
N= Numbers of data-points.
We have been given that mean of our data set is 9. So we will find the square of each data point's distance to the mean.
Now let us substitute our given values in above formula.
Upon adding the square of distances we will get,
Upon dividing 46 by 4 we will get,
Upon taking square root of 11.5 we will get,
Therefore, the standard deviation for our given data set will be 3.39.
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Step-by-step explanation:
b can be used to check her score
Answer:
7.5 miles
Step-by-step explanation:
Given
- In cycling,He covered 9 miles in
hours,Therefore his avg cycling speed, u
- In second event, It took him
hours to complete,And his avg speed,v is 7
slower than in previous event
⇒v= u-7
v= 12-7
v=5
Distance covered in 1st event
Distance covered in 2nd event
