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IrinaK [193]
3 years ago
5

6. For a two-day rental at the surf shop, it costs $45 to rent a surf board and $60 to rent a paddle board. On a

Mathematics
1 answer:
Masja [62]3 years ago
5 0

Answer:

Step-by-step explanation:

dtttttttttbccccccccccisssssssserrrrrrrrr774444444444

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A credit card company decides to study the frequency with which its cardholders charge for items from a certain change of retail
gregori [183]

Answer:

15.87% of the total number of cardholder would be expected to be charging 27 or more in the study.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Mean of 25 charged purchases and a standard distribution of 2

This means that \mu = 25, \sigma = 2

Proportion above 27

1 subtracted by the pvalue of Z when X = 27. So

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

Z = \frac{27 - 25}{2}

Z = 1

Z = 1 has a pvalue of 0.8413

1 - 0.8413 = 0.1587

Out of the total number of cardholders about how many would you expect are charging 27 or more in the study?

0.1587*100% = 15.87%

15.87% of the total number of cardholder would be expected to be charging 27 or more in the study.

6 0
2 years ago
Why is 6/11=x/33 not a proportion
sertanlavr [38]

6/11=x/33 is not a proportion because they aren't equal to each other.

6 0
3 years ago
(4200 + 75) + 5 = ( ? )+ (75+5)<br> What would make it true?
geniusboy [140]

Answer:

4200

Step-by-step explanation:

4280=(?)+80

So the answer is 4200

8 0
3 years ago
Read 2 more answers
Simplify by dividing three over five divided by negative four over nine.
Kruka [31]
If I read that right:

(3/5)/(-4/9) is equal to

(3/5)*(9/-4)

-27/20

-1 7/20
3 0
3 years ago
Read 2 more answers
Ms Ramos’s thumb measures 4 centimeters. Express the length in meters.
viva [34]

Answer:

1.1%

Step-by-step explanation:

it goes to meters and this is the answer

8 0
3 years ago
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