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jok3333 [9.3K]
3 years ago
12

HELPPP ASAPP Bernie's Bars has determined that a granola bar measuring 3 inches long has a z-score of +1 and a granola bar measu

ring 3.50 inches long has a z-score of +2. What is the standard deviation of the length of granola bars produced at Bernie's Bars? 3
3.5
2
0.50
Mathematics
2 answers:
mrs_skeptik [129]3 years ago
8 0

Answer:

the answer is D) 0.5

Step-by-step explanation:

This is because the the 3 inch bar to 3.5 inch bar jumped 0.5, but the z-score jumped 1. So if the z-score keeps jumping 1 every 0.5, your answer has to be D).

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

<u></u>

Len [333]3 years ago
3 0

Answer:

Standard deviation of the length of granola bars produced at Bernie's Bars is 0.50      

Step-by-step explanation:

We are given the following information in the question:

Formula:

z_{score} = \displaystyle\frac{x - \mu}{\sigma}

where,

μ is the mean and σ is the standard deviation.

Putting the values we get:

\displaystyle\frac{ 3- \mu}{\sigma} = 1\\\\3 = \sigma + \mu\\\\\displaystyle\frac{ 3.5- \mu}{\sigma} = 2\\\\3.5 = 2\sigma + \mu

Solving the two obtained equations:

Subtracting the two obtained equation, we have:

3.5-3 = \mu + 2\sigma - \mu -\sigma\\\sigma = 0.5

Hence,  standard deviation of the length of granola bars produced at Bernie's Bars is 0.50

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