3 years ago

Thanks for all the help how can i repay?

Mathematics

1 answer:

scoundrel [369]3 years ago

7 0

Answer:

All work and answers are in the picture

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Step-by-step explanation:

2x-8

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2 (x-4)

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3 years ago

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3 years ago

A researcher selects a sample of 49 participants from a population with a mean of 12 and a standard deviation of 3.5. What is th

enot [183]

Answer:

The probability of selecting a sample mean of 13 or larger from this population is 0.0228

Step-by-step explanation:

A researcher selects a sample of 49 participants from a population with a mean of 12 and a standard deviation of 3.5.

$n = 49$

$\mu = 12$

$\sigma = 3.5$

We are supposed to find the probability of selecting a sample mean of 13 or larger from this population i.e. $P(x\geq 13)$

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Refer the z table

$P(Z$

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