Answer:
confused
Step-by-step explanation:
Answer:
I think it's 12.
Step-by-step explanation:
3(-2)^2 in a calculator give you 12
Answer: 0.45
Step-by-step explanation:
(no 2 and 4) 15%+30% = 45%
45/100 = 0.45
We have a sample of 28 data points. The sample mean is 30.0 and the sample standard deviation is 2.40. The confidence level required is 98%. Then, we calculate α by:
The confidence interval for the population mean, given the sample mean μ and the sample standard deviation σ, can be calculated as:
Where n is the sample size, and Z is the z-score for 1 - α/2. Using the known values:
Where (from tables):
Finally, the interval at 98% confidence level is:
The largest percentage of the students living on campus is in the 1st year group is false