We know that out of the 1996 people, 294 had high blood pressure. We can use that to create a fraction.
294/1996 = 147/998 = 0.14729...
The probability of the next person having blood pressure is about 15%.
Answer:
And rounded up we have that n=115
Step-by-step explanation:
In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by 
and 
. And the critical value would be given by:
Solution to the problem
The margin of error for the proportion interval is given by this formula:
(a)
The proportion of defectives is estimated as: 
. And on this case we have that the margin of error is 
and we are interested in order to find the value of n, if we solve n from equation (a) we got:
(b)
And replacing into equation (b) the values from part a we got:
And rounded up we have that n=115
Answer:
x = 4
y = 116
Step-by-step explanation:
Please let me know if you want me to add an explanation as to why this is the answer/how I got this answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)
Answer: (The first one) the domain is 10 is less than or equal to x which is less than or equal to 60
It is A because it can’t be B and it can’t be C and it can’t be D so my answer is A
