ucational tests, including MMPI are often designed so they have a mean of 50 and a standard deviation of 10. What score separates out the lowest one fifth (20%) from the rest? There proportion assiociated with those scores two ore moer standard deviations above the mean is .0016. Among 1000 people, the number of people one would expect to have two scores two standard deviations or more above the mean is about 23 and Approximately 20.89% of scores in educational tests are between raw scores of 42 and 48. State the proportion, z score and raw score. Also provide an interpret

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Q: what percent of values fall between 5.25 and 8.75 if the mean =9 and standard deviation =2.36

A: Answer: From the given data, Mean (μ) = 9 Standard deviation (σ) = 2.36 X follows normal…

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A: From the provided information, The range is between z = -1.5 to z = 1.5

Q: QUESTION 6 Given an x-mean of 15 and a y-mean of 12.2, calculate the crossproduct of x=15 and y=8.

A: When x=15 and y=8 Crrosproduct =x*y = 15*8

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A: Given , The population mean ( n )   = 75 ,  the population standard deviation ( σ )= 6

Q: Psychological and educational tests, including MMPI are often designed so they have a mean of 50 and…

A: Given that  They have a mean of 50 and a standard deviation of 10.

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A: We will standardize the normal variable and then use standard Normal table to find the required.

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