Multiple choice

The number of burgers sold by a shopkeeper is estimated on different days and data is collected. It is observed that the collected data follows a normal distribution. If the given data has a mean of 30 and a standard deviation of 8, then which of the following value is exactly 3.25 standard deviations more from the mean?

  1. 26

  2. 56

  3. 86

  4. 116

  5. 126
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B Correct answer
Explanation

Value = Mean + (z * SD) = 30 + (3.25 * 8) = 30 + 26 = 56.

AI explanation

To find the value exactly 3.25 standard deviations above the mean, calculate 30 plus the product of 3.25 and 8. Multiplying 3.25 by 8 gives 26, and adding this to the mean of 30 results in 56.

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