Determine the standard error for sample

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1. Experience has shown that the value of orders placed by customers of Class Act Pty is normally distributed, with an average order value (μ) of R1 150, and a standard deviation (σ) of R115. A sample of 135 orders is randomly selected.

2. Determine the standard error for this sample.

3. What is the probability that the mean value of the orders in thesample is less than R1 155? Interpret your answer.

Reference no: EM133037681

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