From the data in the table, determine the mean, median and mode.
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HSC Diagnostic - Normal Distribution
Question 2 of 8
Scores in a class test are normally distributed, with a mean of 68 and a standard deviation of 8. Given this, then 95% of all scores must lie between?
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HSC Diagnostic - Normal Distribution
Question 3 of 8
Calculate the \(z\) score give \(x = 48,\bar x = 42\) and \(s=4\)
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HSC Diagnostic - Normal Distribution
Question 4 of 8
Alice scored 70 in an English test. The test had a mean of 64 and a standard deviation of 2. What was Alice's \(z\) score?
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HSC Diagnostic - Normal Distribution
Question 5 of 8
From the data in the adjacent table, rank the \(z\) scores for the 3 subjects from highest to lowest.
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HSC Diagnostic - Normal Distribution
Question 6 of 8
Joan has a \(z\) score of \(-1\) on a French test \((\bar x = 60,SD = 3)\) and a \(z\) score of 1 on a Science test \((\bar x = 50,SD = 6)\). What was the difference in Joan's raw scores?
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HSC Diagnostic - Normal Distribution
Question 7 of 8
What percentage of scores in a normal distribution have a \(z\)-score between \(-2\) and \(1\)?
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HSC Diagnostic - Normal Distribution
Question 8 of 8
A group of 250 students sit for a maths examination. The mean was 58 and the standard deviation was 6. How many students are expected to score less than 52?
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Year 12 - Normal Distribution - Questions
Question 1
From the data in the table, determine the mean, median and mode.
Answer Click to reveal
\(11,11,11\)
Worked SolutionClick to reveal
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