Answer: a) 0.8413, b) 0.9987.
Step-by-step explanation:
Since we have given that
Mean = 3 pounds
Standard deviation = 0.25 pounds
n = 28 bricks
So, (a) What is the probability that all the bricks in the sample exceed 2.75 pounds?
![P(X>2.75)\\\\=P(z>\dfrac{2.75-3}{0.25}\\\\=P(z>\dfrac{-0.25}{0.25})\\\\=P(z>-1)\\\\=0.8413](https://tex.z-dn.net/?f=P%28X%3E2.75%29%5C%5C%5C%5C%3DP%28z%3E%5Cdfrac%7B2.75-3%7D%7B0.25%7D%5C%5C%5C%5C%3DP%28z%3E%5Cdfrac%7B-0.25%7D%7B0.25%7D%29%5C%5C%5C%5C%3DP%28z%3E-1%29%5C%5C%5C%5C%3D0.8413)
b) What is the probability that the heaviest brick in the sample exceeds 3.75 pounds?
![P(X>3.75)\\\\=P(z>\dfrac{3.75-3}{0.25})\\\\=P(z>\dfrac{0.75}{0.25})\\\\=P(z>3)\\\\=0.9987](https://tex.z-dn.net/?f=P%28X%3E3.75%29%5C%5C%5C%5C%3DP%28z%3E%5Cdfrac%7B3.75-3%7D%7B0.25%7D%29%5C%5C%5C%5C%3DP%28z%3E%5Cdfrac%7B0.75%7D%7B0.25%7D%29%5C%5C%5C%5C%3DP%28z%3E3%29%5C%5C%5C%5C%3D0.9987)
Hence, a) 0.8413, b) 0.9987.
22 (what number is in the middle one you put it in ascending order)
18 (the first quartile is the first quarter of the sorted list)
23 (the third quarter, the number in between the last number and the median)
5 (the range between quartile 1 and quartile 3)
Have a great day <3
Answer:
<u><em>All real numbers</em></u>
Step-by-step explanation:
<u><em>We can start out by knowing that</em></u><u><em> the domain of a graph is, the side, to side from the x axis directions. </em></u>
<u><em>We can see that the </em></u><u><em>line continues of the graph shown, meaning it is infinite. </em></u><u><em>Meaning the answer is </em></u><u><em>the domain is all real numbers.</em></u>
<u><em>We can double check by seeing that the other options don't work or aren't enough:</em></u>
<u><em /></u>
<u><em>The first wouldn't work becuase, yes that is part of the answer, but not the whole answer. The same goes for the others as well, they are on the line and are correct, but the best, and full answer is </em></u><u><em>"All real numbers"</em></u>
Answer:
20.625 dollars or about 20.63 dollars
Step-by-step explanation:
33/8 = 4.125
4.125 times 5 = 20.625
Answer: The only force on it is its weight, w=9800N
Step-by-step explanation: