Answer:
We Do not have enough evidence
Step-by-step explanation:
H0 : σ² ≤ 1.1
H0 : σ² > 1.1
The test statistic (X²) :
χ² = [(n - 1) × s²] ÷ σ²
n = sample size, = 20
s² = 1.6
σ² = 1.1
α = 0.01
χ² = (19 * 1.6) / 1.1
χ² = 27.64
Pvalue :
Using the Pvalue from Chisquare score calculator ; χ² = 27.64 ; df = 19
Pvalue = 0.091
If Pvalue < α ; Reject H0
0.091 > 0.01
Hence, Pvalue > α ; Thus we fail to reject H0.
We thus conclude that, we do not have enough evidence to support the claim that her standard deviation is greater than the target.
4.110 = four and eleven hundredths.
Answer The answer is 544
Step-by-step explanation: You can make two triangles and a rectangle. The triangle at the left top you do:
25 x 8= 200
The triangle at the bottom you do:
8 x 8= 64
The rectangle which is in the middle you do:
35 x 8= 280
Then you add all of them to get your answer:
280 + 200 + 64= 544
Hope this helped
Answer:
7.5
Step-by-step explanation:
So, we rounded up to 7.5, because the decimal digit 8 is higher than 5.