7x2+3[81-(4x6)] Simplify
2 answers:
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Answer:
The test statistic is
Step-by-step explanation:
We are interested in determining whether or not the proportion of the student who experience anxiety during the exam is significantly more than 80%.
At the null hypothesis, we test if the proportion is 80%, that is:
At the alternate hypothesis, we test if the proportion is more than 80%, that is:
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.
80% is tested at the null hypothesis:
This means that
A random sample of 100 students was taken. Eighty-five of the student in the sample experienced anxiety during the exam.
This means that
The test statistic is
The test statistic is
Answer:
B) x + 1/y times h/g+1
Step-by-step explanation:
We need to divide by
then match with given choices to find the correct equivalent result.
where given choices are:
A) x/y times h/g
B) x + 1/y times h/g+1
C) x+ 1/y divided h/g+1
D) y/x+1 divided g+1/h
So let's divide by
we are allowed to flip the bottom fraction and change division sign into multiplication. So we get:
Hence correct choice is: B) x + 1/y times h/g+1