Answer:
-18 + 6j
Step-by-step explanation:
3 * -6 is -18
3 * 2j is 6j
The table showing the sums and the number of appearance is given below:
sum(x) number of appearance(f) x - x(bar) (x - x(bar))^2 f(x - x(bar))^2
2 1 -5 25 25
3 2 -4 16 32
4 3 -3 9 27
5 4 -2 4 16
6 5 -1 1 5
7 6 0 0 0
8 5 1 1 5
9 4 2 4 16
10 3 3 9 27
11 2 4 16 32
12 1 5 25 25
Mean is given by
The standard deviation is given by:
Answer:
x-intercept(s)- (7/5, 0)
y-intercpet(s)- (0,-7)
Step-by-step explanation:
Answer:
Because when 4:6 is simplified, you get 2:3, but when 8:10 is simplified, you get 4:5
So, they are not equivalent ratios because their simplified ratios are not the same.
Step-by-step explanation:
Hope this is helpful.
Answer:
The 95% confidence interval estimate for the population mean force is (1691, 1755).
Step-by-step explanation:
According to the Central Limit Theorem if we have an unknown population with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from the population with replacement, then the distribution of the sample mean will be approximately normally.
The sample selected here is <em>n</em> = 30.
Thus, the sampling distribution of the sample mean will be normal.
Compute the sample mean and standard deviation as follows:
Construct a 95% confidence interval estimate for the population mean force as follows:
Thus, the 95% confidence interval estimate for the population mean force is (1691, 1755).