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Sonbull [250]
2 years ago
11

5) 1

Mathematics
1 answer:
solniwko [45]2 years ago
6 0

Answer:

$3.49

Step-by-step explanation:

-The z value is calculated by the formula:

z=\frac{\bar x -\mu}{\sigma}

Where \mu, \sigma are the mean and standard deviation respectively and \bar x is the price of the random selection.

#We substitute and solve for \mu:

z=\frac{\bar x -\mu}{\sigma}\\\\1.6=\frac{4.29-\mu}{0.5}\\\\0.8=4.29-\mu\\\\\mu=3.49

Hence, the mean price of a box of cereal is $3.49

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