Question: 5 6 Refer to Exercise 5 5 The engineer in charge of the coffee manufacturing process examines the confidence intervals for the mean caffeine content

5 6 Refer to Exercise 5 5 The engineer in charge

5 6 Refer to Exercise 5 5 The engineer in charge of the coffee manufacturing process examines the confidence intervals for the mean caffeine content calculated over the past several weeks and is concerned that the intervals are too wide to be of any practical use That is they are not provid ing a very precise estimate of a What would happen to the width of the confidence intervals if the level of confi dence of each interval is increased from 95 to 99 b What would happen to the width of the confidence intervals if the number of sam ples per hour was increased from 50 to 100

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