(71+x)/2=78
71+x=156
x=85
Th student needs to score a min of 85
Answer: 323
Step-by-step explanation:
The formula to calculate the sample size for proportion is given by :_
Given : Significance level :
Critical value :
Margin of error :
The proportion of successes :
Now, the required sample size will be :-
Hence, the minimum required sample size = 323
Answer:
Step-by-step explanation:
"m" will be your next letter, for you are skipping 1, going back to it... and so it will be from "k" to "m", and then to "L"
hope this helps
your answer is "M"
Answer:
30°, 1/2
Step-by-step explanation:
The triangle is a 30, 60, 90 right triangle. A very common right triangle. All the angles of a triangle add up to 180°. So if you take 180° - 90° - 60° = 30°.
Now we take sin(30)*2 the hypotenuse and get 1/2.