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3 years ago

If Hector is 8 years old and Mary is 3 years old how old will Mary be when Hector is 16

Mathematics

1 answer:

IRINA_888 [86]3 years ago

7 0

Okay so 8 (hector) - 3(Mary) = 5 years apart
So, 16 (hector) - 5 (years apart) = 11 (Mary’s age)

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Answer:

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Step-by-step explanation:

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2 years ago

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3 years ago

Suppose a simple random sample of size nequals36 is obtained from a population with mu equals 74 and sigma equals 6. (a) Descri

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Part a)

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Therefore the sampling distribution has a mean of

$\mu = 74$

The standard error of the means becomes the standard deviation of the sampling distribution.

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We need to convert to z-score.

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Part c)

We want to find

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We convert to z-score and use the normal distribution table to find the corresponding area.

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Part d)

We want to find :

$P(73\:$

We convert to z-scores and again use the standard normal distribution table.

$P( \frac{73 - 74}{1} \:< \: z$

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3 years ago