Answer: A
Step-by-step explanation:
I did this test before : )
Answer:
c hope it helps lllllllllll
The answer to your question is 11
Answer:
For x ≤ 2, it's a closed circle around two pointing to the left
For x < -5, it's a open circle on -5 pointing to the left.
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.