This is the concept of trigonometry, the distance of Lily from the tower will be given by:
tan theta=[opposite]/[adjacent]
opposite=1450 ft
adjacent=x ft
theta=15.7
thus;
1450/x=tan15.7
hence;
x=1450/tan15.7
x=5,158.54 ft
x=5,159 (to the nearest foot)
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Answer: A.
Step-by-step explanation:
To find mean, average the numbers in the data set by adding them together and dividing by the number of values.
(96 + 77 + 82 + 91 + 89) / 5 = 87.
To find median, take the "middle" value of the data set. To find this, you can sort the numbers in ascending order and remove the same amount of values from each side.
77 / 82 / 89 / 91 / 96, the median is 89.
Therefore, the mean is less than the median.
Answer:
Option D.
Step-by-step explanation:
The given expression is :
Factoring the denominators we have:
Making denominators same and simplifying the fractions we have:
Option D is the right anser.
Answer:
Since they use random sampling then we can conclude that the two estimators would be unbiased of the real parameter.
So then the best answer would be:
c. The sample proportion, ^p, in either proposal is equally likely to be close to the true population proportion, p, since the sampling is random.
Step-by-step explanation:
For this case we have a first sample size and from this sample we have people who anwswer yes and the estimated proportion of yes is given by:
And let a second sample size and from this sample we have people who anwswer yes and the estimated proportion of yes is given by:
For this case we know that the true proportion is
Since they use random sampling then we can conclude that the two estimators would be unbiased of the real parameter.
So then the best answer would be:
c. The sample proportion, ^p, in either proposal is equally likely to be close to the true population proportion, p, since the sampling is random.