Answer:
Yes, we can conclude that the ship is older than the national average
Step-by-step explanation:
Population mean, μ = 23.6
Sample mean, xbar = 26.7
Sample size, n = 38
H0 : μ = 23.6
H0 : μ > 23.6
The test statistic :
(xbar - μ) ÷ (σ/√(n))
(26.7 - 23.6) ÷ (5.2/√(38))
3.1 / 0.8435513
Test statistic = 3.675
Decision region :
Reject H0 ; if |Tstatistic| > |Tcritical|
Since we are given the sample standard deviation ; we use the T test distribution
df = 38 - 1 = 37
Tcritical at df = 37 ; α = 0.05 ; rigth tailed :
Tcritical(0.05, 37) = 1.687
3.675 > 1.687 ; Hence, we reject H0 and conclude that there is enough evidence that this type of shop is older than the national average.
I think it’s 3/2! if you simplify 12/8 that’s what you get.
Answer:
12
Step-by-step explanation:
The diagram shows a right angle, therefore (6x-2) + 20 = 90.
<u>Find x</u>
(6x - 2) + 20 = 90
6x - 2 = 70
6x = 72
x = 12
<u>Confirmation</u>
[6(12) - 2] + 20 = 90
Answer:
211.1
Step-by-step explanation:
3 isn't greater than or equal to 5 so it will not round up to 2 so your answer will be 211.1
9514 1404 393
Answer:
(-3, 8)
Step-by-step explanation:
For m the midpoint of xy, we have ...
m = (x+y)/2 ⇒ y = 2m-x
y = 2(4, 3) -(11, -2) = (2·4 -11, 2·3 +2)
y = (-3, 8)
