<span>-11 /7 * 7 /5</span>= -2(1/5)
Answer:
6,280 ft³
Step-by-step explanation:
To find lateral surface area, use the formula L = 2
rh, then plug in the values:
L = 2(3.14)(25)(80)
L = 12,560 ft³
Since its a half cylinder, we have to divide this by 2:
12,560/2 = 6,280
So, the lateral area of the roof is 6,280 ft³
95÷100of the time
if he ran 20 races rhus month
95÷100×20 =19
Answer:
Hence, data does not suggest the true average gap detection threshold for CTS subjects exceeds that for normal subjects.
Step-by-step explanation:
H0 : μ1 = μ2
H1 : μ1 < μ2
Given :
m = 8 ; x1 = 1.71 ; s1 = 0.53
n = 10 ; x2 = 2.53 ; s2 = 0.87
The test statistic :
(x1 - x2) / √(s1²/m + s2²/n)
(1.71 - 2.53) / √(0.53²/8 + 0.87²/10)
-0.82 / √0.1108025
Test statistic = - 0.82 / 0.3328700
Test statistic = - 2.463
The degree of freedom using the conservative approach :
Smaller of (10 - 1) or (8 - 1)
df = 7
TCritical value(0.01, 7) = 2.998
Decision region :
Reject H0 if |Test statistic| > |critical value|
Since, 2.463 < 2.998 ; WE fail to reject H0 ; Hence result is not significant at α = 0.01
