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Elden [556K]
3 years ago
7

The weights of 1,000 men in a certain town follow a normal distribution with a mean of 150 pounds and a standard deviation of 15

pounds.
From the data, we can conclude that the number of men weighing more than 165 pounds is about
, and the number of men weighing less than 135 pounds is about
Mathematics
2 answers:
ludmilkaskok [199]3 years ago
6 0
68% fall within +/- 1 SD, so men above that 1 SD (165) are: (100-68)/2
32/2 = 16% above 165 and also 16% below 135
Zinaida [17]3 years ago
3 0

Answer:

Step-by-step explanation:

Let X be the weights of 1000 men in a certain town.

Given that X is N(150, 15)

P(X>165) = P(Z>1) =0.5-0.3413 = 0.1687

No of men weighing more than 165 pounds in 1000 men = 1000(0.1687)

=168.7 =169 men apprxy.

Similarly

P(X<135) = P(Z<2)=0.5-0.4775 = 0.0225

No of men weighing less than 135 pounds is about =0.0225(1000)

= 22.5

=22

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In a triangle, the measure of an angle is in the same order of size as the length of the opposite side. The smallest angle is opposite the shortest side. The largest angle is opposite the longest side. The middle-sized angle is opposite the middle-sized side.

Also, in a triangle, the sum of the measures of the interior angles is 180.

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