Answer:
57.5 degrees
Step-by-step explanation:
Assuming this is a triangle
a is adjacent is ∠B
b is opposite of ∠B
Use the inverse tangent equation:
This equals to 57.52880771
Yvonne is 3 years younger than her sister.the sum of thier ages is 25 years.
2 answers:
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Answer:
The value of the test statistic is
Step-by-step explanation:
Our test statistic is:
In which X is the sample mean, is the expected value,
is the standard deviation and n is the size of the sample.
The level of ozone normally found is 7.5 parts/million (ppm).
This means that
The mean of 24 samples is 7.8 ppm with a standard deviation of 0.7.
This means that
Test Statistic:
The value of the test statistic is