Answer:
Step-by-step explanation:
In the normal distribution curve, the mean is in the middle and each line to the left and to the right of that mean represent 1- and 1+ the standard deviation. If our mean is 400, then 400 + 50 = 450; 450 + 50 = 500; 500 + 50 = 550. Going from the mean to the left, we subtract the standard deviation and 400 - 50 = 350; 350 - 50 = 300; 300 - 50 = 250. We are interested in the range that falls between 350 and 450 as a percentage. That range represents the two middle sections, each containing 34% of the data. So the total percentage of response times is 68%. We are looking then for 68% of the 144 emergency response times in town. .68(144) = 97.92 or 98 emergencies that have response times of between 350 and 450 seconds.
<span> i solved the problem by listing all the possible combinations (123, 124, 125...). But I have a feeling there's a shortcut to solving this problem.I think there is but you get the juist of it </span>
Answer:
The square root of 961 is 31.
Check your work by doing 31 squared.
Hopefully this helped! :)
The missing number is 9. Pretty long equation..
Answer:
8/17
Step-by-step explanation:
Use a calculator to Divide 72/153 and then use the transformation function to turn it into a fraction, both 72/152 and 8/17 = 0.4705882353~