What is 5x(12.28) +30/2
2 answers:
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This is what is in the middle of the second paragraph. That statement is correct.
I don't know that it is any simpler or not, but what they have done in the answer is rationalize the denominator. That means that the denominator is no longer under the square root sign.
To get that result, you multiply numerator and denominator by √F
When you do that, your get
This results in the middle answer.
Answer:
Let level of significance is =0.05
Since p-value is greater than alpha so students' mean score does not significantly differ from the national average.
Correct option is:
His students' mean score does not significantly differ from the national average, because his p-value is greater than alpha.
Let level of significance is =0.10
Since p-value is less than alpha so students' mean score does significantly differ from the national average.
Correct option is:
His students' mean score does significantly differ from the national average, because his p-value is less than alpha.