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nekit [7.7K]
3 years ago
14

A company manufactures tennis balls. When its tennis balls are dropped onto a concrete surface from a height of 100 ​inches, the

company wants the mean height the balls bounce upward to be 54.8 inches. This average is maintained by periodically testing random samples of 25 tennis balls. If the​ t-value falls between minust 0.95 and  t 0.95​, then the company will be satisfied that it is manufacturing acceptable tennis balls. A sample of 25 balls is randomly selected and tested. The mean bounce height of the sample is 56.9 inches and the standard deviation is 0.25 inch. Assume the bounce heights are approximately normally distributed. Is the company making acceptable tennis​ balls?
Mathematics
1 answer:
inna [77]3 years ago
7 0
Yes the company is making them correct boss
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<em>Find out more at brainly.com/question/24074411. </em>

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Use the laws of Sines and law of cosines to find missing dimensions​
Andrei [34K]

Answer:

A) ERROR

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Step-by-step explanation:

Houston, We have a problem!!! too much information

If we had a legit triangle, the law of sines would hold

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as this is NOT an equality, the triangle does not exist as described.

IF it did, we'd get different results depending on which set we used

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or

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If we attempt to use Law of cosines

DE² = 19² + 8² - 2(19)(8)cos22 = <u>11.9639...</u>

so really none is correct because we attempt to use trig calculations to a non-triangle.

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6 0
3 years ago
Read 2 more answers
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Hitman42 [59]
I think the answer is B
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3 years ago
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