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noname [10]
2 years ago
5

Can somebody help me pleasse?

Mathematics
2 answers:
Elenna [48]2 years ago
6 0

yes! what do you need?

Step-by-step explanation:

Luda [366]2 years ago
4 0
Help! I need somebody help!!! Not just anybody!!! Help!
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Alan is paying a dinner check but he was not sure how much he should tip for his bill of $27 and thirty-eight. if a standard tip
morpeh [17]
So you need to find 15% of $27.38. To do this you can multiply 27.38 * .15 and get 4.107. Round to $4.11 and this is the tip. The total bill would be $31.49
3 0
2 years ago
Read 2 more answers
Solve. −1/2x+1/3>3/5 Drag and drop a number or symbol into each box to show the solution.
Ludmilka [50]
x= <-8/15 is your Answer:
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3 years ago
Suppose you work for a company that manufactures electronics. The development analysts estimate that 5% of their flagship produc
givi [52]
I’m not sure but I tried
6 0
3 years ago
1 1/5 divided by /10
ZanzabumX [31]

Answer:

<u>0.12, 6/50</u> are the answers.

Step-by-step explanation:

1/5 = 0.2

1.2/10 = 0.12

0.12 = 6/50

Have a nice day!

6 0
2 years ago
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A principal believes 50% of her music students reported their practice hours accurately. Based on that assumption, she ran 200 s
Alex17521 [72]

Answer:

C. unlikely

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

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

A probability is said to be extremely likely if it is 95% or higher, and extremely unlikely if it is 5% or lower. A probabilty higher than 50% and lower than 95% is said to be likely, and higher than 5% and lower than 50% is said to be unlikely.

In this problem, we have that:

\mu = 0.48, \sigma = 0.18

How likely is it that a single survey would return a mean of 30%?

We have to find the pvalue of Z when X = 0.30.

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

Z = \frac{0.30 - 0.48}{0.18}

Z = -1

Z = -1 has a pvalue of 0.1587.

So the correct answer is:

C. unlikely

4 0
3 years ago
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