7.5
5+5=10
25-10=15
15/2=7.5
Answer: 7.5 feet
Answer:
81 samples
Step-by-step explanation:
According to the empirical rule :
Possible values of the sample mean is within 3 standard deviations of the population mean :
μ ± 3 sd(x) ; sd(x) = standard deviation of sampling distribution.
3 * sd(x) = 1
sd(x) = 1/3
Recall:
Standard deviation of sampling distribution, sd(x)
sd(x) = σ / sqrt(n)
1/3 = 3 / sqrt(n)
Square both sides
1/9 = 9/n
Cross multiply :
n * 1 = 9 * 9
n = 81
Answer:
D
Step-by-step explanation:
because if you add the numbers up you will get the answer easy :)
There are 8 equal parts. Each part is 1/8 of the whole 8/8
Both are not functions because functions cannot have repeating x values
