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The value of z-score for a score that is three standard deviations above the mean is 3.
In this question,
A z-score measures exactly how many standard deviations a data point is above or below the mean. It allows us to calculate the probability of a score occurring within our normal distribution and enables us to compare two scores that are from different normal distributions.
Let x be the score
let μ be the mean and
let σ be the standard deviations
Now, x = μ + 3σ
The formula of z-score is
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⇒
⇒
Hence we can conclude that the value of z-score for a score that is three standard deviations above the mean is 3.
Learn more about z-score here
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Answer:
The customer will pay $19
Option B is correct.
Step-by-step explanation:
Price of Ham per pound = $5.99
Price of Turkey per pound = $4.99
Price of Roast beef per pound = $6.99
Price of Salami per pound = $2.99
Price of Bologna per pound = $3.99
Customer purchased:
Ham = pound
Turkey = pound
Roast beef = 1 pound
Bologna = pound
We will multiply the pound purchased with per pound price and add them to find the total cost.
The customer will pay :
So, the customer will pay $19
Option B is correct.