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blondinia [14]
3 years ago
14

Hilida spent 47$ and know has no money left she had blink before her purchase​

Mathematics
1 answer:
Bas_tet [7]3 years ago
8 0

Answer:

$47

Step-by-step explanation:

If she spent 47, and had none after, she spent 47.

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A grocery stores studies how long it takes customers to get through the speed check lane. They assume that if it takes more than
Lemur [1.5K]

Answer:

4.65% probability that a randomly selected customer takes more than 10 minutes

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

\mu = 7.45, \sigma = 1.52

Probability that a customer takes more than 10 minutes:

This is 1 subtracted by the pvalue of Z when X = 10. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{10 - 7.45}{1.52}

Z = 1.68

Z = 1.68 has a pvalue of 0.9535

1 - 0.9535 = 0.0465

4.65% probability that a randomly selected customer takes more than 10 minutes

6 0
3 years ago
Two friends share 7 cookies equally. How many cookies does each friend get?
shusha [124]
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Mrs. Smith bought breakfast tacos for her family and they cost $9.48 for a dozen tacos how much was the cost of each taco
Murrr4er [49]

$0.79

Just divide 9.48 by 12.

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3 years ago
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Answer:

64

Step-by-step explanation:

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