False. The frequency curve for a distribution can be obtained by drawing a smooth and free hand curve through the midpoints of the upper sides of the rectangles forming the histogram.

7 0

3 years ago

Whats the slope of the line y+6=1/3(x-4)

marta [7]

Y + 6 = 1/3( x - 4)
y + 6 = 1/3 x - 4/3
y = 1/3 x 22/3

⇒ Slope = 1/3

Answer: 1/3

8 0

3 years ago

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Students who prefer rock or classic rock to students who prefer all other types of music

Nikolay [14]

Since there is 12 students who prefer rock and 4 that prefer classic rock that will equal 16. add up all the other number to get 26 and your ratio will be: 16/26

4 0

3 years ago

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Store A uses the newsvendor model to manage its inventory. Demand for its product is normally distributed with a mean of 500 and

ra1l [238]

Answer:

$P(X$

Step-by-step explanation:

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Let X the random variable that represent the Demand for its product on this case, and for this case we know the distribution for X is given by:

$X \sim N(\mu=500,\sigma=300)$