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2 years ago

Please help with this question

Mathematics

1 answer:

sleet_krkn [62]2 years ago

8 0

160cm
Because since the formula is
V=1/3(Base Area) x h
V= 1/3 24 x h
1/3 of 24 is 8
V= 8 x h
Then height is 20cm
V = 8 x 20
V = 160

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Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

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The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

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The probability a student selected at random takes no more than 71.52 minutes to complete the examination equals 0.8997.

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$\sigma = \frac{(71.52 - 55.5)}{1.78}$

$\sigma = 9$

$\mu = 55.5 + 0.5\sigma = 55.5 + 0.5*9 = 55.5 + 4.5 = 60$

Question

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