Answer:
89.03
Step-by-step explanation:
29x3.07=89.03
Answer:
25
Step-by-step explanation:
I believe
-3^2 + -4^2
9+16=25
Answer:
Step-by-step explanation:
Multiply both sides by 4:
Divide both sides by 3:
Answer:
1/18 or 55.5%
Step-by-step explanation:
hope u enjoy!!! add me in the brainly list
Answer:
We accept the null hypothesis that the breaking strength mean is less and equal to 1750 pounds and has not increased.
Step-by-step explanation:
The null and alternative hypotheses are stated as
H0: u ≥ 1750 i.e the mean is less and equal to 1750
against the claim
Ha: u > 1750 ( one tailed test) the mean is greater than 1750
Sample mean = x`= 1754
Population mean = u = 1750
Population deviation= σ = 65 pounds
Sample size= n = 100
Applying the Z test
z= x`- u / σ/ √n
z= 1754- 1750 / 65/ √100
z= 4/6.5
z= 0.6154
The significance level alpha = 0.1
The z - value at 0.1 for one tailed test is ± 1.28
The critical value is z > z∝.
so
0.6154 is < 1.28
We accept the null hypothesis that the breaking strength mean is less and equal to 1750 pounds and has not increased.
