The confidence interval formula is computed by:
Xbar ± Z s/ sqrt (n)
Where:
Xbar is the mean
Z is the z value
S is the standard deviation
N is the number of samples
So our given are:
90% confidence interval with a z value of 1.645
Sample size 40, 45
Mean 180, 179
Standard deviation 2, 4
So plugging that information in the data will give us a
confidence interval:
For 1:
Xbar ± Z s/ sqrt (n)
= 180 ± 1.645 (2 / sqrt (40))
= 180 ± 1.645 (0.316227766)
= 180 ± 0.520194675
= 179.48, 180.52
For 2:
Xbar ± Z s/ sqrt (n)
= 179 ± 1.645 (4 / sqrt (45))
<span>= 179 ± 1.645 (0.596284794)</span>
therefore, the answer is letter b
There must be 2 lines on every plane because you need a y-axis and an x-axis.
I belive it would be B. because of the fact that they are parallel which means their slope should stay the same...but their y-intersept would change
Answer:
Step-by-step explanation:
log₂125 = log₂(5²) = 2log₂5 = 2k
B because it doesn’t matter how many projects you do . If it doesn’t benefit your career then it is bad
