Answer:
A:
Step-by-step explanation:
***I'm pretty sure A should read "NO, because the test value 1.257 is less than the critical value 1.782. Please check the wording of the problem***
H0 : μ ≤ 400
Ha : μ > 400 (claim)
Sample mean: 6,155/13
Sample standard deviation: √44422.4359
Critical test value:
t > 1.782
t = (6,155/13 - 400)/[(√44422.4359)/√13] = 1.257
1.257 < 1.782 ; we fail to reject the null hypothesis
There is not enough evidence at the 5% level of significance to support the claim that the mean battery life is at least 400 hours.
-4 i think I'm not sure tho
1/6=4/24
2/3=16/24
1/4=6/24
4/24+16/24+6/24=26/24=13/12=1+(1/12)
Answer:
lateral surface area of the triangular prism = 128 cm²
Step-by-step explanation:
Answer:
4, 7, 6, 9
Step-by-step explanation:
Its easy. X and Y stuff
