A company’s board of directors took a random sample of 10% of the company’s employees and surveyed them about their happiness at
2 answers:
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Dilation involves enlarging or reducing the size of a shape.
The scale factor of dilation is 1/6
From the complete question, the side lengths of corresponding sides of both triangles are:
This means that, the larger triangle is ABC, while the smaller triangle is AB'C'.
So, the scale factor of dilation from the larger triangle to the smaller triangle is:
This gives
Remove the common units
Reduce fraction
Hence, the scale factor of dilation is 1/6
Read more about dilation at:
Answer:
The value of the test statistic is
Step-by-step explanation:
The test statistic is:
In which X is the sample mean, is the value tested at the null hypothesis,
is the standard deviation and n is the size of the sample.
Test if the mean is equal to 5:
This means that the null hypothesis is
A simple random sample of wrist breadths of 40 women has a mean of 5.07 cm. The population standard deviation is 0.33 cm.
This means that
Find the value of the test statistic?
The value of the test statistic is