For 261 female heights, the mean was 66.4 inches and the standard deviation was 2.6 inches. The shortest person in this sample had a height of 54 inches. (a) Find the z-score for the height of 54 inches. Z = (b) What does the negative sign for the z-score represent? O The height is above the mean. O The height is below the mean. O The height can not be obtained since the z-score is negative. O There is nothing that we can say about the height.

Q: the mean is 146, and standard deviation is 35. A score of 251 is how many z-scores above the mean?

A:

Q: A student has taken a 50-point exam and wants to know how his score of 38 compares to the scores of…

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Q: Convert score 46 to z-score if the mean is 40 and the standard deviation is 4.

A: The definition of a z-score is:   z = (X - μ) / σ

Q: Ngan scored 1 standard deviation below the class average on a statistics exam. The class average was…

A:

Q: her wishes to give A’s to the top 8% of the students and F’s to the bottom 8%. The next 10% will be…

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A:

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A: Given: mean = 84.

Q: standard deviation

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Q: The mean is 146 and the standard deviation is 35. A score of 41 is how many z-scores below the mean?

A:

Q: Calculate the mean if -2 standard deviation = 70 and +2 standard deviation = 100. The mean of the…

A:

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Q: Karen scored a 76 on an exam whose mean is 74 and whose standard deviation is 8. Find her z score.

A:

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A: If x=17 z=?

Q: estimate the average student GPA at his high school.

A: Given : n=35 , X-bar=3.5 , s=0.33 Here , JaJuan want to estimate the average or mean.