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Gekata [30.6K]
3 years ago
7

I need the answers for these please ​

Mathematics
1 answer:
WARRIOR [948]3 years ago
5 0

Answer:

1. T

2. line VW

3. W

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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
How would you solve this without a calculator?
Soloha48 [4]

Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.

Exact Form:

1351+780\sqrt{3}

Decimal Form:

2701.99962990

Thus, <em>2,701</em> is your answer

5 0
2 years ago
How do you multiply(2x+3)(x-7)
kompoz [17]

Answer:

2x(x-7)+3(x-7)

2x²-14x+3x-21

2x²-11x-21

6 0
3 years ago
Solve this by Substituton
lana66690 [7]
There is no solution for this equation
4 0
3 years ago
How do you solve -1/3y-6=-11?
Ket [755]

Answer:

y=15

Step-by-step explanation:

-1/3(15)-6=-11

-5-6=-11

5 0
3 years ago
Read 2 more answers
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