2 years ago

Solve the mean of 4,5,3,4,3,1

Mathematics

2 answers:

sweet [91]2 years ago

8 0

Answer:

refer to the pic attached for steps

LiRa [457]2 years ago

5 0

Answer:

3.333 recurring

Step-by-step explanation:

Add and divide for the mean

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cupoosta [38]

Answer:

The value of the test statistic is $z = -1.5$

Step-by-step explanation:

The formula for the test statistic is:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the statistic, $\mu$ is the mean, $\sigma$ is the standard deviation and n is the number of observations.

In this problem, we have that:

$\mu = 20, X = 17, \sigma = 6, n = 9$

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{17 - 20}{\frac{6}{\sqrt{3}}}$

$z = -1.5$

The value of the test statistic is $z = -1.5$

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Step-by-step explanation:

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