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d1i1m1o1n [39]
2 years ago
5

The manager of a store records the mode of payment of the 90 customers who visited his store today in the table below.

Mathematics
1 answer:
Rainbow [258]2 years ago
7 0

Answer:

Number 4 is correct.

Step-by-step explanation:

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The weight of a product is normally distributed with a mean of four ounces and a variance of .25 squared ounces. What is the pro
ololo11 [35]

Answer:

P(X>3.75)=P(\frac{X-\mu}{\sigma}>\frac{3.75-\mu}{\sigma})=P(Z>\frac{3.75-4}{0.5})=P(z>-0.5)

And we can find this probability using the complement rule and we got:

P(z>-0.5)=1-P(z

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 weights of a population, and for this case we know the distribution for X is given by:

X \sim N(4,\sqrt{0.25}=0.5)  

Where \mu=4 and \sigma=0.5

We are interested on this probability

P(X>3.75)

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>3.75)=P(\frac{X-\mu}{\sigma}>\frac{3.75-\mu}{\sigma})=P(Z>\frac{3.75-4}{0.5})=P(z>-0.5)

And we can find this probability using the complement rule and we got:

P(z>-0.5)=1-P(z

5 0
3 years ago
Luke has 48 books he puts 7 books in a box how many boxes can he fill?? Explain how you interpreted the remainder.
madam [21]
You divide 48 by 7 and you get the remainder of 6.8 . Therefore he can ONLY put 6 books in each box.
3 0
3 years ago
Read 2 more answers
What is the slope of the line segment?<br><br> 5<br> 1/5<br> -1/5<br> -5
Elanso [62]

Answer:

5

Step-by-step explanation:

Calculate slope by choosing two points. (1, 5) and (2, 10)

slope = (10 - 5) / (2 - 1) = 5/1 = 5

6 0
3 years ago
What's the answer to this math question
fenix001 [56]
Im not exactly sure but i think:

r^2+6r+2
________
5r^2-5r-25

remember IM NOT SO SURE
7 0
2 years ago
It takes james 2.5 minutes to type 150 words at that rate how mant words can james type in 6 minutes
sergey [27]

The number of words james can type in 6 minutes at the same rate is 360 words

Given:

Number of minutes to type 150 words = 2.5 minutes

let

number of words James can type in 6 minutes = x

Equate the ratio of the number of words to number of minutes

150 : 2.5 = x : 6

150/2.5 = x/6

cross product

150 × 6 = 2.5 × x

900 = 2.5x

x = 900/2.5

x = 360 words

Therefore, the number of words james can type in 6 minutes is 360 words

Learn more about ratio:

brainly.com/question/16981404

5 0
2 years ago
Read 2 more answers
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