Answer:
Since x=−3 is a vertical line, the slope is undefined.
Step-by-step explanation:
Answer:
Step-by-step explanation:
Hello!
You have two populations of interest and want to compare them. If you define the study variables as:
X₁: average hourly wages of an employee of the Downtown store.
n₁= 25
X[bar]₁= $9
S₁= $2
X₂: average hourly wages of an employee of the North Mall store.
n₂= 20
X[bar]₂= $8
S₂= $1
Both samples taken are independent, assuming that both populations are normal and that their population variances are equal I'll use the Student's-t statistic with a pooled sample variance to calculate the Confidence interval:
95% CI for μ₁ - μ₂
(X[bar]₁-X[bar]₂) ± 


Sa= 1.64

(9-8)±2.017*
[0.007636;1.9923]
I hope it helps!
Answer:
1/40
Step-by-step explanation:
A bag contains 5 blue, 3 red, and 8 green marbles
You have (5+3+8=16) marbles
P(red 1) = red/total = 3/16
You do not replace it
A bag contains 5 blue, 2 red, and 8 green marbles
You have (5+2+8=15) marbles
P(red 2nd) = red/total = 2/15
P(red 1, red 2) = P (red 1)* P (red 2) = 3/16 * 2/15
=1/40
Answer:
5.773 %.
Step-by-step explanation:
The interest is compounded 6 *4 = 24 times in 6 years.
Amount after 6 years =
25,000 = 6,500 ( 1 + r) ^24 where r is the quarterly rate of interest.
( 1 + r) ^ 24 = 3.8462
24 ln (1 + r) = ln 3.8462
ln (1 + r) = ln 3.8462 / 24
ln (1 + r) = 0.056129
1 + r = e^0.056129 = 1.05773
r = 0.05773
= 5.773 %