Question

A manufacturer of house-dresses sent out advertising by mail. He sent samples of material to each of 2 groups of 1,000 women. For one group, a blue envelope. He received orders from 10% and 13% respectively. Do the data indicate that the colour of the envelope has an effect on the sales? Use 5% level of significance.​

Answer 1

Answer:

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Step-by-step explanation:

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