Hmm I think the answer is 95%
1 standard deviation is 13
To find out the range of scores that fit 1 standard deviation from the mean, you would have to take away and add 13 from the mean (133) this gives a range of 120-146 which isn’t right because you’re looking for 107-159.
Next, look for 2 standard deviations from the mean which is just 13 x 2=26.
To find the range of scores that are 2 standard deviations from the mean take away and add 26 to the mean (133) which gives a range of 107-159. This is the correct answer.
2 standard deviations represents 95% of the data. That’s why I think the answer is 95%.
I'mm not sure what you're asking but if you want to know what the actual size of the ant is just:
take 1.4 divided by 7 and that will give you the actual size: 0.2 cm
if you want to know how big the picture ant is just:
take 1.4 and multiply it by 7 then that will give you the actual size of the picture ant: 9.8 cm.
Answer:
See below.
Step-by-step explanation:
There is no statement given so we can only guess. There is a way of finding out.
Slope ZY = - 1/2
Slope XY = 2
Those two slopes (when multiplied) will equal - 1 (2 * -(1/2) = - 1). That is the definition of two lines meeting at right angles or one line being perpendicular to another.
For this case what you can do is an average to calculate the number of hours it will take them to work together:
Let
t: average time.
hi: hours worked for each one.
n: number of teams.
The average will be given by:
t = (h1 + h2) / (n)
Substituting both values:
t = ((15) + (10)) / (2) = 12.5
answer
it would take 12.5 h to pave that same section of highway if both crews worked together
#9
7 / 1
-------
1 / 3
= 7 x 3
-----------
1 x 1
= 21
------
1
21 miles per gallon
# 11
2/3 / 1/4
= 2/3 * 4/1
=8/3