Perform a test of hypothesis and interpret

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A brand of powdered milk is adverstised as having a net weight of 250 grams. A curious consumer obtained the net weight of 10 randomly selected cans. The values obtained are: 256, 248, 242, 245, 246, 248, 250, 255, 243, and 249 grams. Is there reason to believe that the average net weight of the powdered milk cans is less than 250 grams at 10% level of significance? Assume the net weight is normally distributed with unknown population variance.

1. How will you state the Ho and Ha?

2. What is the value of a?

3. What is the test statistic? State the formula.

4. State the decision rule.

5. Perform a test of hypothesis and interpret.

Reference no: EM132522160

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