Answer:
Yes
Step-by-step explanation:
The fraction 3/4 which is equal to 9/12 is larger than 2/3 which is equal to 8/12. The fraction with the larger numerator is the larger fraction if the denominators are the same.
Answer: 11
Step-by-step explanation:
5 x 2.2
= 11.0
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Answer:
we can conclude that there is significant evidence to support the stance that mean pH value in water differs from 8.5
Step-by-step explanation:
H0 : μ = 8.5
H1 : μ < 8.5
Test statistic :
(xbar - μ) / s/sqrt(n)
(8.24 - 8.5) ÷ (0.16 ÷ √12)
-0.26 ÷ 0.0461880
Test statistic = - 5.63
The Pvalue can be obtained from the test statistic value using a Pvalue calculator :
df = 12 - 1 = 11
Pvalue = 0.000077
Using an α value of 0.05 ; we can conclude that
Pvalue < α ; We reject H0
Hence, we can conclude that there is significant evidence to support the stance that mean pH value in water differs from 8.5
55% x n = 33
divide 33 by .55
n = 60
