Answer:
D: 160
Step-by-step explanation:
Fifth graders read 68, which is easy to see. Fourth graders read between 48 and 52, the bar appears to be directly in the middle of the two lines, so we say they read 50. Third graders read between 40 and 44, again the bar appears to be directly in the middle so we say they read 42.
42+50+68=160
Answer:


An we can use the normal standard table and the following difference and we got this result:

Step-by-step explanation:
Assuming this statement to complete the problem "with a standard deviation 5 mpg"
We have the following info given:
represent the mean
represent the deviation
We have a sample size of n = 54 and we want to find this probability:

And for this case since the sample size is large enough >30 we can apply the central limit theorem and then we can use this distribution:

And we can use the z score formula given by:

And replacing we got:


An we can use the normal standard table and the following difference and we got this result:

Answer:
can not
Step-by-step explanation:
Answer: 1/6 is not equal to 6/12 because 6/12 is 1/2 and 1/6 is less
Step-by-step explanation: