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adoni [48]
3 years ago
11

A z-score of +1.6 represents a value which is how many standard deviations above the mean?

Mathematics
2 answers:
Olegator [25]3 years ago
4 0

Answer:

<em>The data point is </em><em>1.6</em><em> standard deviations above the mean.</em>

Step-by-step explanation:

Z-score

It is the number of standard deviations from the mean that a data point is. It's a measure of how many standard deviations below or above the population mean a raw score is.

A Z-score is also known as a standard score and it can be placed on a normal distribution curve.

As in this case the Z-score is +1.6, so it means the data point is 1.6 standard deviations above the mean.

jolli1 [7]3 years ago
3 0
Base on the question that is asking to choose among the following choices that states on how many standard deviations above the mean and base on my own computation, I would say that the answer would be letter C. 1.6,  I hope you are satisfied with my answer and feel free to ask for more 
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The price of a computer component is decreasing at a rate of 15​% per year. State whether this decrease is linear or exponential
Margaret [11]

Answer:

Since the price is given by an exponential function, the decline in price is exponential.

The component will cost $36.8475 in three years.

Step-by-step explanation:

The equation for the price of a component has the following format:

P(t) = P(0)(1-r)^{t}

In which P(t) is the price after t years, P(0) is the initial price, and r is the rate that the price decreases.

Since the price is given by an exponential function, the decline in price is exponential.

The price of a computer component is decreasing at a rate of 15​% per year.

This means that r = 0.15

Component costs ​$60 ​today

So P(0) = 60. Then

P(t) = P(0)(1-r)^{t}

P(t) = 60(1-0.15)^{t}

P(t) = 60(0.85)^{t}

What will it cost in three​ years?

This is P(3).

P(t) = 60(0.85)^{t}

P(3) = 60(0.85)^{3} = 36.8475

The component will cost $36.8475 in three years.

6 0
3 years ago
The equation for the cost in dollars of producing computer chips is y =.000015x^2-.03x+35. Where x is the number of chips produc
Anna35 [415]
In order to find the number of chips that would result in the minimum cost, we take the first derivative of the given equation. Note that the derivative refers to the slope of the graph at a given point. We can utilize this concept knowing that at the minimum or maximum point of a graph, the slope is zero. 

Taking the derivative of the given equation and equating it to zero, we have:

y' = (0.000015)(2)x - (0.03)x° + 0
0 = (0.00003)x - 0.03

Solving for x or the number of chips produced, we have x = 1000. We then substitute this value in the given equation, such that,

y = (0.000015)(1000)² - (0.03)(1000) + 35

The minimized cost, y, to produce 1000 chips is then calculated to be $20. 
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3 years ago
Find the missing angles using either the triangle sum theorem (a2+b2=c2) or inverse trigonometric ratios
insens350 [35]

using trigonometry:-

cos of angle ? = 7/16

so ? = arccos 7/16 = 64.06 degrees


The other angle is 90 - 64.06 = 25.94 degrees

4 0
3 years ago
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What is the answer for -8=s+6
9966 [12]

Answer:

s=-14

Step-by-step explanation:

-8 = s+6       Given

-14 = s          Subtract 6 from both sides

7 0
3 years ago
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ahrayia [7]

Answer:

8m-4=16

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Step-by-step explanation:

8 0
3 years ago
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