Question

Sydney is conducting market research on the price of washing machines. Sydney has determined that the average cost of a washing machine is $776, and that the distribution of costs is normally distributed with a standard deviation of $92. a. If a washing machine is randomly selected, what is the probability that the washing machine costs more than $811? 0.3520 X b. If a washing machine is randomly selected, what is the probability that the cost is between $811 and $963? c. Suppose that Sydney collects a random sample of the costs of 16 washing machines. What is the probability that the sample mean cost is between $767 and $823?

          Sydney is conducting market research on the price of washing machines. Sydney has determined that the average cost of a washing machine is $776, and that the distribution of costs is normally distributed with a standard deviation of $92.
a. If a washing machine is randomly selected, what is the probability that the washing machine costs more than $811?
0.3520
X
b. If a washing machine is randomly selected, what is the probability that the cost is between $811 and $963?
c. Suppose that Sydney collects a random sample of the costs of 16 washing machines. What is the probability that the sample mean cost is between $767 and $823?

Sydney is conducting market research on the price of washing machines. Sydney has determined that the average cost of a washing machine is 776, and that the distribution of costs is normally distributed with a standard deviation of92.
a. If a washing machine is randomly selected, what is the probability that the washing machine costs more than 811?
0.3520
X
b. If a washing machine is randomly selected, what is the probability that the cost is between811 and 963?
c. Suppose that Sydney collects a random sample of the costs of 16 washing machines. What is the probability that the sample mean cost is between767 and 823?

Added by Allison P.

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