The variance (σ^2) is the square of the differences between the mean and each data.
The problem says that the program reports a mean of 31.5 and a standard deviation of 2.5, so you have to elevate the standar deviation to the power 2:
σ^2 = (2.5)^2
σ^2 = 6.30
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What is the variance of the data?
</span> The variance of the data is 6.30, so the the correct option is D.
Find the common denominator of 3 and 6. which is 6. now just subtact 2 and 1 which is 1. ur answer is 1/6
Answer: I'm afraid I can't answer that.
Step-by-step explanation: I need details and if it's a workbook or something then I probably don't have it
Answer:
The alligator is 60 Inches long.
Step-by-step explanation:
5 feet is 60 inches.
hope it helps!
Answer:
$400
Step-by-step explanation:
The original price of the jacket = 100%
If the jacket was reduced by 30%, then the discounted price of the jacket = 100% - 30% = 70%
Therefore, $280 = 70% of the original price.
70% = 70/100 as a ratio
Using ratios, and letting
be the original price:
280/
= 70/100
Cross multiply: 280 x 100 = 70 x 
28000 = 70
Divide both sides by 70: 400 = 
Therefore, the original price of the jacket is $400
Alternatively, divide 280 by 70 to get the cost per 1%. Then multiply this by 100 to get the original price (100%):
(280 ÷ 70) x 100 = 400