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Number of arrests is the benchmark

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Reference no: EM131064483

The number of arrests in the 24th Precinct are normally distributed with the average of 15 per month and standard deviation of 5. Use the z-table to answer...

  1. What % of officers make more than 20 arrests per month?
  2. What % of officers make between 10 and 18 arrests per month?
  3. What number of arrests is the benchmark for officers who are in the top 10% of monthly arrests?

STANDARD ERROR

Define standard error:

Formula:

1. A population has a standard deviation σ of 26 units. (Give your answers correct to two decimal places.)

(a) Find the standard error for the mean if n = 25.

(b) Find the standard error for the mean if n = 47.

(c) Find the standard error for the mean if n = 89.

Reference no: EM131064483

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