Mathematics, 19.03.2021 14:00 madeleine43

A food processor packages apple juice in small jars, the weights of the filled jars are approximately normally distributed with a mean of 11 grams and a standard deviation of 0.4 grams. a) A random sample of 15 jars is taken. What is the standard error for the sample mean?

b) A random sample of 8 jars is taken. What is the probability that the sample mean will be between 10.8 and 11.2 grams?

c) Calculate the two values symmetrically distributed around the population mean associated with a probability of 70%.

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