3 years ago

Help i will give brainliest

Mathematics

1 answer:

ycow [4]3 years ago

4 0

0.329, 127.5, and -89 is rational. Square root of 101 is irrational.

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A certain tennis player makes a successful first serve 6969% of the time. Suppose the tennis player serves 9090 times in a matc

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a) 4.387

b) Yes, because np & npq are greater than 10.

c) = 0.017

Step-by-step explanation:

Give data:

p = 0.69

n = 90

a) a

E(X) = np = 62.1

$SD(X) = \sqrt{(np(1-p))}$

$=\sqrt{90\times 0.69(1- 0.69)}$

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npq = 19.251

Yes, because np & npq are greater than 10.

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