3 years ago

PLZ HELY ILL MARK BRANILEST

1 answer:

6 0

Answer:

518

Step-by-step explanation:

14 x 74 = 1036 1036 / 2 = 518

( really need brainliest , hope it helps )

( first )

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LiRa [457]

Answer:

$P(X\geq 3.4)=0.0228$

Step-by-step explanation:

Given the mean is 3.2, standard deviation is 0.8 and the sample size is 64.

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#First determine the z-value:

$z=\frac{\bar X -\mu}{\sigma/\sqrt{n}}\\\\=\frac{3.4-3.2}{0.8/\sqrt{64}}\\\\=2.000$

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