The answer to the problem is -5
Answer:
19 people were surveyed
Step-by-step explanation:
0 children = 3
1 child = 4
2 children = 5
3 children = 5
4 children = 2
3 + 4 = 7 + 10 = 17 + 2 = 19
The sample proportion has an approximately normal distribution, with the mean being the population mean and the standard deviation (i.e. the standard error of the sampling proportion) equal to
SE = sqrt(p*q/n) where p is the population proportion q is 1-p, and n is the sample size.
<span>(Typically, for a confkdence interval, the sample proportion and its complement are substituted for p and q.) </span>
The margin of error will be Zc*SE, where Zc is the critical value of Z for the level of confidence required. The confidence interval, then, will be the sample proportion, plus or minus the margin of error.
For a 90% confidence interval, Zc is 1.645.
<span>So the margin of error is 1.645 * sqrt(.9*.1/400), roughly .025. So your confidence interval would be around [.875, .925]
The best and most correct answer among the choices provided by your question is the second choice or letter C which is 3%.
I hope my answer has come to your help. Thank you for posting your question here in Brainly.</span>
Can’t see your answer choices but the absolute value of -3 is 3 so I would say 3 is your answer
12•1
13•6
12/78 divide both numbers by 6 to simplify
Answer- 2/13
