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Kaylis [27]
3 years ago
11

(arb)4 = 81r24 where a and b are positive integers. Work out a and b.

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
8 0

Step-by-step explanation:

(arb)4 = 81r24

a4r4b = 81r24

a4  = 81

a = 4√81

a = 3

r4b = r24

4b = 24

b = 6

any more help just ask :)

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A population has mean 187 and standard deviation 32. If a random sample of 64 observations is selected at random from this popul
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Answer:

11.51% probability that the sample average will be less than 182

Step-by-step explanation:

To solve this question, we have to understand the normal probability distribution and the central limit theorem.

Normal probability distribution:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

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In this problem, we have that:

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This is the pvalue of Z when X = 182. So

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