Answer:
The speed of the car is 250. The error the student made is they didn't look at the hours.
Step-by-step explanation:
Answer: 24
Step-by-step explanation:
all you have to do is 8x4=24. :) ur welcome
Answer:

But we need to calculate the mean with the following formula:

And replacing we got:

And for the sample variance we have:

And thi is the best estimator for the population variance since is an unbiased estimator od the population variance 

Step-by-step explanation:
For this case we have the following data:
1.04,1.00,1.13,1.08,1.11
And in order to estimate the population variance we can use the sample variance formula:

But we need to calculate the mean with the following formula:

And replacing we got:

And for the sample variance we have:

And thi is the best estimator for the population variance since is an unbiased estimator od the population variance 

Answer:
128 and 74.
Step-by-step explanation:
128 rounded to the nearest ten is 130, and 74 rounded to the nearest ten is 70. 130-70=60