Answer:
Step-by-step explanation:
4X^2=33-9
4X^2=24
X^2=24:4
X^2=6
X=\sqrt{6}
Good luck!
Answer: I think its (D) Graph D
Step-by-step explanation: Hope this helps!
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.
I think it’s 5 square yards I’m not sure though
The answer is 25. Hope it helps