Answer:
Here is the answer.
x= 1/2(7+3i√3) and 1/2(7-3i√3)
The confidence interval can be calculated from the margin of error, and vice versa,
The margin of error of the confidence interval is 2.156
The confidence interval is given as:

The formula of confidence interval is:

Where E represents the margin of error.
So, by comparison:

Multiply

Hence, the margin of error of the confidence interval is 2.156
Read more about margin of errors at:
brainly.com/question/13990500
Well to find out what n is, let's look at the whole numbers around the value of 6.7, so it would be 6 and 7.
From the list, square root of which larger number will provide you with 6 and 7.
It would be C. Since the square root of 36 is 6 and square root of 49 is 7. Knowing this the square root of n, some unknown number must then be between the numbers of 36 and 49, as the square roots of those numbers respectively are 6 and 7. Square root of n which is 6.7 is found between them.
Answer:
To find the median, the data should be arranged in order from least to greatest. If there is an even number of items in the data set, then the median is found by taking the mean (average) of the two middlemost numbers.
81,83,91,94
since its an even number add up the two middle numbers 83 and 91 to equal 174 then divide by two to have the median of 87
Step-by-step explanation:
Answer:
c
Step-by-step explanation: