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Author Archives: Anonymous

In a press release, a major fast food chain issues the state…

In a press release, a major fast food chain issues the statement: “Since 2007, we have reduced our reliance on paper products by 30%.” This is an example of

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If the mean of a normal distribution is 16.5 with a standard…

If the mean of a normal distribution is 16.5 with a standard deviation of 1.7, find P(x

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Find the z value depicted.

Find the z value depicted.

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formula sheet – Test 3.docx

formula sheet – Test 3.docx

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A given population has a mean of 268 with a standard deviati…

A given population has a mean of 268 with a standard deviation of 17.  A sample of 64 items is selected from this population.   [a] What is the standard deviation for the sampling distribution of sample means? Round to 2 decimal places [b] What is the mean of the sampling distribution? [c] What is the probability that a random sample of size 64 has a mean that is less than 272?

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The average height of chipmunks is 5.27 inches with a standa…

The average height of chipmunks is 5.27 inches with a standard deviation of 0.64 inches. Theodore takes a sample of 64 chipmunks and measures their height.  Was is the probability that the sample has an average (mean) height that is more than 5.5 inches tall?  

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Find the area to the right of z= -1.35  

Find the area to the right of z= -1.35  

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Find the area between z= -2.49  and z=1.53

Find the area between z= -2.49  and z=1.53

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Find the z-score that corresponds to the 75th Percentile (P7…

Find the z-score that corresponds to the 75th Percentile (P75). Select the z-value that is closest if there is not one that exactly matches 75 percent.  

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Before you submit the test, be sure to submit a picture of y…

Before you submit the test, be sure to submit a picture of your scratch work using the Canvas app.

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