Answer:
Step-by-step explanation:
Ok so this is it, then:
First distribute the 4 into the parenthesis to get rid of them. This gives you:
Now undo the division of 8 by multiplying both sides by 8 to get:
4x - 20 = 72y Add 20 to both sides to get:
4x = 92y so
x = 23y
Answer:
A random sample of house sizes in major city has a sample mean of ¯x=1204.9 x ¯ = 1204.9 sq ft and sample standard deviation of s=124.6 sq ft. Use the Empirical Rule to determine the approximate percentage of house sizes that lie between 955.7 and 1454.1 sq ft.:
Answer:
188 weeks of data must be sampled.
Step-by-step explanation:
From the information given, we can deduce that:
The Margin of error is within = 200
The confidence interval = 95%
The level of significance = 1 - C.I
= 1 - 0.95
= 0.05
The standard deviation = 1400
The number of weeks the data must be sampled can be determined by using the formula for sample size which is:
n = 188.24
n ≅ 188
Thus, 188 weeks of data must be sampled.
The ratio is that of one term to the one before:
... 12/6 = 2
It is "common" because it applies to every pair of adjacent terms:
... 24/12 = 48/24 = 96/48 = 2
The appropriate choice is ...
... B 2
