In a study 10 people were given a test. The mean test score was 78.9 points. The standard deviation for the test scores was 5.2 points. If an 11th person takes the test and scores 77 points, predict what will happen to the mean and standard deviation. Circle the appropriate conclusion in the sentences below. The mean will increase // decrease // stay the same.  The standard deviation will increase // decrease // stay the same.

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Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: We have given that the scores are normally distributed with mean 100 and standard deviation 15.

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: The given data is as follows:Population mean, Population standard deviation,

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Q: how did you find the standard deviation to be 1.2. explain clearly?

A: Here we have to explain the how we get standard deviation is 1.2

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A: given data  cv = 1.9% μ = 3.2σ = ?

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Q: e. Use Excel's statistical functions, such as "=average", to get the mean, median, range, variance,…

A: Since you have posted a question with multiple sub-parts, we will solve first 3 sub-parts for you.…

Q: The average IQ of the adult population is 100. A researcher believes that average IQ of the…

A: The sample mean is calculated as follows: Mean = (69+79+89+99+109)/5           = 445/5           =…

Q: Suppose the mean percentage in Algebra 2B is 70% and the standard deviation is 8%. What percentage…

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Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

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