Answer:
Yes it appropriate to use the normal approximation to find the probability that more than 43% of the people in the sample have high blood pressure
Step-by-step explanation:
From the question we are told that
The population proportion is p=0.4
The sample size is n = 39
The sample proportion is
Generally for normal approximation to be used
so np = 39 * 0.4 = 15.6 > 10
and
so n(1-p ) = 39(1-0.4) = 23.4 >10
Given that the both condition is meet it mean that it appropriate to use the normal approximation to find the probability that more than 43% of the people in the sample have high blood pressure
It answer is c
Hope this helps :D
To find a fraction equivalent to 3/7 you just multiply the numerator (top number of fraction) and the denominator (bottom number of fraction) by the same number (i.e. 2/2, 5/5, etc.)
3/7 * 2/2 = 6/14
3/7 * 3/3 = 9/21
3/7 * 4/4 = 12/28
3/7 * 5/5 = 15/35
3/7 * 6/6 = 18/42
3/7 * 7/7 = 21/49
3/7 * 8/8 = 24/56
3/7 * 9/9 = 27/63
3/7 * 10/10 = 30/70
All of those are equivalent to the fraction of 3/7.
I hope you got a good grade on your assignment!!! :D