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3 years ago

10

The Smith family is traveling to visit friends. The distance to the friend's house is 276.45 miles. It takes the family 5.82 hou

rs to complete the trip. What is the rate for the family's trip in miles per hour?

1 answer:

Dmitriy789 [7]3 years ago

6 0

Answer:

The rate is 47.5 miles per hour :D

Step-by-step explanation:

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Out of the 90 customers at Eva's boutique35 wore a size extra-large. What is the probability that a randomly selected customer w

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Answer: 7/18

Step-by-step explanation:

Number of customers at Eva's boutique = 90

Number of customers who wore a size extra-large = 35

The probability that a randomly selected customer wore a size extra-large will be:

= Number of customers who wore a size extra-large / Number of customers at Eva's boutique

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Therefore, the probability that a randomly selected customer wore a size extra large is 7/18.

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2 years ago

The class scores of a history test have a normal distribution with a mean Mu = 79 and a standard deviation Sigma = 7. If Opal’s

e-lub [12.9K]

Using the normal distribution, we got that expression for the z-score of her test score is

$z= \frac{72-29}{7} \\\\z=-7/7\\\\z=-1$

<h3>What is Normal Probability Distribution?</h3>

it's a type of probability distribution which is symmetric about the mean, it gives data near the mean are more frequent than data far from the mean.

Given that mean = $\mu=79$

and standard deviation = $\sigma = 7$

X=73

we know that formula of z-score is

$z=\frac{X-\mu}{\sigma}$

Hence Z-score can be calculated as

$z= \frac{72-29}{7} \\\\z=-7/7\\\\z=-1$

Using the normal distribution, we got that expression for the z-score of her test score is

$z= \frac{72-29}{7} \\\\z=-7/7\\\\z=-1$

To learn more about the normal distribution visit : brainly.com/question/24663213

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2 years ago

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Step-by-step explanation:

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3 years ago