Answer:
(6, 8)
Step-by-step explanation:
Answer:
1). 1.25 / 250 = .005M
.005 = 1 liter
2). (20)(.5) = 10M
have a good day, and be safe
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Answer:
I think like 16.9 fluid ounces
K
Step-by-step explanation:
Make into improper fraction
2 3/4= 11/4 and 1 5/6= 11/6
now multiply
11/4*11/6= 121/24 which turns to 5 1/24
I hope this helps!
Answer:C. (77.29, 85.71)
Step-by-step explanation:
We want to determine a 95% confidence interval for the mean test score of randomly selected students.
Number of sample, n = 25
Mean, u = 81.5
Standard deviation, s = 10.2
For a confidence level of 95%, the corresponding z value is 1.96. This is determined from the normal distribution table.
We will apply the formula
Confidence interval
= mean +/- z ×standard deviation/√n
It becomes
81.5 +/- 1.96 × 10.2/√25
= 81.5 +/- 1.96 × 2.04
= 81.5 +/- 3.9984
The lower end of the confidence interval is 81.5 - 3.9984 =77.5016
The upper end of the confidence interval is 81.5 + 3.9984 =85.4984
Therefore, the correct option is
C. (77.29, 85.71)
