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asambeis [7]
3 years ago
7

A data set has a mean of 720 and a standard deviation of 6. which is closest to the z-score for an element of this data set with

a value of 709
Mathematics
1 answer:
lisabon 2012 [21]3 years ago
7 0
Mean = u = 720
Standard deviation = s = 6
Data Value = x = 709

The formula to calculate the z score is:

z= \frac{x-u}{s}

Using the values, we get:

z= \frac{709-720}{6} \\  \\ 
z=-1.83

Thus the z score for the data value will be -1.83. 
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Answer:

The marked price of the watch is $2,702.27.

Step-by-step explanation:

Since allowing 20% discount on the marked price of a watch, the value of the watch will be Rs. 2378, to determine, if the VAT of 10% is added, it's marked price, the following calculation must be performed:

1 - 0.2 = 0.8

0.8 x 1.1 = 2378

0.88 = 2378

0.88 = 2378

0.8 = X

0.8 x 2378 / 0.88 = X

1,902.4 / 0.88 = X

2,161.81 = X

0.8 = 2,161.81

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2,161.81 / 0.8 = X

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4 0
2 years ago
The sum of two numbers is -149. One number is 5 less than the other. Find the numbers
PSYCHO15rus [73]

Answer:

-72 and -77

Step-by-step explanation:

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6 0
3 years ago
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The equation of the parabola is
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Substituting (x, y) = (6, 10) gives
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The 4th selection is appropriate.
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Please help I’m timed!!!
yKpoI14uk [10]

Answer:

XWZ

ZWX

Step-by-step explanation:

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