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Reptile [31]
3 years ago
11

Need help asap!! Will give brainliest

Mathematics
1 answer:
just olya [345]3 years ago
4 0

Answer:B

Step-by-step explanation:

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Heated-treated parts are specified to have a hardness of at least 45 (lower specification limit). Any parts that are below 45 ar
Nataly_w [17]

Answer:

P(X

And we can find this probability using the normal standard table or excel and we got:

P(z

The figure shows the calculation for this case.

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the hardness of a population, and for this case we know the distribution for X is given by:

X \sim N(48.5,2)  

Where \mu=48.5 and \sigma=2

We are interested on this probability

P(X

And the best way to solve this problem is using the normal standard distribution and the z score given by:

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

If we apply this formula to our probability we got this:

P(X

And we can find this probability using the normal standard table or excel and we got:

P(z

The figure shows the calculation for this case.

5 0
3 years ago
NEED HELP, please help ASAP!!!!!!!!
nadya68 [22]

Answer: B

Step-by-step explanation:

6 0
2 years ago
Clara has 1,896 milliliters of juice to make punch. She needs to pour an equal amount of juice into 8 containers. How much juice
Effectus [21]

Answer:

en cada vaso debe verter 237 mililitros

Step-by-step explanation:

1896 Divídelo en 8 es igual que 237 por 8

6 0
2 years ago
Please help with these question, giving brainliest :)
garri49 [273]

Answer:

Step-by-step explanation:

3 0
2 years ago
Find the sale price when the original price is $37.00 and the discount rate is 44%.
nexus9112 [7]
Sale price = original price - discount
discount = 44% of original price = 44% of $37 = 0.44 x 37 = $16.28

Sale price = $37 - $16.28 = $20.72
5 0
3 years ago
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