Answer:
Step-by-step explanation:
water must be evaporated from 32 ounces of a 4% salt solution to make a 8% salt solution? Question 465362: How much water must be evaporated from 32 ounces of a 2% salt solution to make a 8% salt solution? ==> x = 24 ounces of water must be evaporated.
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Absolute value of -25 is 25.
|-25| = 25
To solve this problem, we make use of the z statistic.
The formula for the confidence interval can be calculated using the formula:
Confidence Interval = p ± MOE
where,
p is the portion of girls = 278 / 556 = 0.5
MOE is the margin of error
We calculate the margin of error using the formula:
MOE = z * sqrt[p (1 – p) / n]
From the standard distribution tables, the value of z at 99% confidence is:
z = 2.58
Therefore the MOE is:
MOE = 2.58 * sqrt[0.5 (0.5) / 556]
MOE = 0.055
Therefore the confidence interval is:
Confidence Interval = 0.5 ± 0.055
Confidence Interval = 0.445, 0.555
0.445<p<0.555
Answer:
2=2=2=2=2=2=2=2=2=2=2=2=2=2=2
Step-by-step explanation:
The average is the sum divided by the count.
144 / 4 = 36
Answer: 36
