Answer:
b.
Step-by-step explanation:
In pretty sure the answer would be 4/18. I think it would be this because If half the students are boys and 4/9 of the boys have brown eyes, this means that the whole club is 18. You add the two denominators. This equals the whole. Since it is asking for boys with brown eyes out of the whole group you put the number of brown eyed boys over the total number of kids.
Answer:
The answer is E. Impossible to determine
Step-by-step explanation:
Normally, you would find the Confidence interval of a normal sample by using
X(-+) Z* Sigma/n
Where x is the mean, sigma the standard deviation n the size of the sample and z the value determined by your confidence interval size of 95%
.However, this approximation of a confidence interval may only be used for a sample if the number of observations is at least 30 or above. When we have less observations than 30 we must use the standard deviation of the populations. But we only have a sample standard deviation so its not adequate or possible to determine CI the true mean of the population with such a small sample size.
Answer:
x = - 7
Step-by-step explanation:
( x + 139 ) and 132 are vertically opposite angles.
Vertically opposite angles are equal,
x + 139 = 132
x = 132 - 139
x = - 7
