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Luba_88 [7]
3 years ago
10

A radio station claims that the amount of advertising each hour has a mean of 15 minutes and a standard deviation of 2.9 minutes

. You listen to the radio station for 1 hour and observe that the amount of advertising time is 16 minutes. Calculate the ​z-score for this amount of advertising time. Round to the nearest hundredth.
Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
6 0

Answer:

0.1296

Step-by-step explanation:

Use the normpdf function available on basic calculators:

normpdf(16,15,2.9) = 0.1296

This is the z-score representing 16 minutes.  Note that 16 is just one point above 15, so this small positive z-score makes sense.

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Categorical data may or may not have some logical order while the values of a quantitative variable can be ordered and measured.

 

Categorical data examples are: race, sex, age group, and educational level

Quantitative data examples are: heights of players on a football team; number of cars in each row of a parking lot

 

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6 0
3 years ago
A right triangle has a side of length 1 fourth and a hypotenuse of length 1 third. What is the length of the other side?
Marina86 [1]

Answer:

The other side = \frac{1}{12} units

Step-by-step explanation:

A right triangle has a side of length \frac{1}{4} units and;

the hypotenuse is \frac{1}{3}

According to Pythagorean theorem,

a² + b² = c² , where a and b are the two legs of a triangle and c is the hypotenuse.

Lets say a² = (\frac{1}{4}) ^2   and  c² = ((\frac{1}{3} )^2

b² = c² - a²

b² = \frac{1}{9} - \frac{1}{16} = \frac{1}{144}

So b = \sqrt{1/144} = \frac{1}{12} units.

So the other side = \frac{1}{12} units.

5 0
3 years ago
What is the simplified answer to 5/2
Yanka [14]
Maybe it the mixed number form. 2 1/2?
8 0
3 years ago
What are the approximate values of the minimum and maximum points of
Katen [24]
To start off, you can divide the right side of the equation by x to get rid of most of the x's so you get the polynomial x^4 - 10x^2 + 9. This means that f(x) = x^4 - 10x^2 + 9x. By factoring the right side of the equation, you get f(x) = (x^2 - 1)(x^2 - 9). I think the minimum value is 1 and the maximum value is 3. 
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arlik [135]

Answer:

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Look at multiples of 7 and you’ll find 91.

91 dived by 3 is 30 with a remainder of 1.

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91 divid by 7 is 13 with no remainder.

5 0
3 years ago
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