What is the unit rate of 3 accidents in 12 months
2 answers:
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Answer:
The answer to your question is: 83 + 6
Step-by-step explanation:
This is a square of a binomial.
(2 + 3
1.- Square of the first term
( 2 = 4(5) = 20
2.- Twice the product of the two terms
(2)(2(3
= 6
3.- Square of the second term
(3 = 9(7) = 63
4.- Write the solution
20 + 6 + 63
83 + 6
Answer:
C.I. = (2.297, 11.703)
Step-by-step explanation:
The t-statistic for difference of mean is given by,
Here, = 84
= 7
s₁ = 4
n₁ = 12
s₂ = 6
n₂ = 18
Substituting all value in formula,
We get, t = -3.541 at 28 degree of freedom.
Using this formula, we get, t = 1.5342
Therefore, based on the data provided, the 99% confidence interval for the difference between the population means is: 2.297 <
< 11.703
which indicates that we are 99% confident that the true difference between population means is contained by the interval (2.297, 11.703)