Question: + LD Page view A Read aloud Draw 5. (20 points) The weight of an item follows normal distribution. The mean weight is 45 and

+ LD Page view A" Read aloud Draw 5. (20 points) The weight of an item follows normal distribution. The mean weight is 45 and its variance is 8. A sample of 15 items is taken, (a) (4 points) What is the probability of the sample mean being at least 44? (b) (4 points) What is the probability of the sample mean being not less than 43 but at most 46? (c) (4 points) What is the probability of the sample mean being within 2 of the population mean? (d) (4 points) What is the probability of the sample mean being less than 48? O Hi W

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2. Are you varying your pitch (to avoid being monotonous)?

8. Do you animate your facial expressions as you deliver your speech?

3. Are you varying your speaking rate and volume?