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Dr. Christina Cuttleman, a nutritionist, claims that the average number of calories in a serving of popcorn is 70 with a standard deviation of 7.

Dr. Christina Cuttleman, a nutritionist, claims that the average number of calories in a serving of popcorn is 70 with a standard deviation of 7. A sample of 50 servings of popcorn was found to have an average of 75 calories. Check Dr. Cuttleman's claim at = 0.05. ( Show all five steps and calculations)

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