Answer:
35 over 6 an 10 over 3
Step-by-step explanation:
Answer:
Marked up by- $9.75
Total price-$22.25
Step-by-step explanation:
12.5 times 0.78
Answer:
Step-by-step explanation:
Hope this helps
Answer:
True
Step-by-step explanation:
The numbers of rooms for 15 homes recently sold were: 8, 8, 8, 5, 9, 8, 7, 6, 6, 7, 7, 7, 7, 9, 9. what is the sample standard d
Artyom0805 [142]
From the data set given:
<span>8, 8, 8, 5, 9, 8, 7, 6, 6, 7, 7, 7, 7, 9, 9
to get the standard deviation we use the formula for variance given by:
</span>σ²=[Σ(x-μ)²]/(n-1)
σ² is the variance
μ is the mean
The mean of the data will be:
μ=(8+8+8+5+9+8+7+6+6+7+7+7+7+9+9)/15=7.4
The variance will be found as follows:
σ²=[(8-7.4)²×4+(5-7.4)²+3×(9-7.4)²+5×(7-7.4)²+2×(6-7.4)²]/(15-1)
σ²=1.4
thus
σ=√1.4=1.1183