Of all the companies on the New York Stock Exchange, profits are normally distributed with a mean of $6.54 million and a standard deviation of $10.45 million. In a random sample of 73 companies from the NYSE, what is the probability that the mean profit for the sample was between 3.0 million and 6.0 million? […]
Thirty-five percent of US adults have little confidence in their cars. You randomly select ten US adults. Find the probability that the number of US adults who have little confidence in their cars is (1) exactly six and then find the probability that it is (2) more than 7. Looking for a Similar Assignment? […]
The dow jones industrial average has had a mean gain of 432 per year with a standard deviation of 72. a random sample of 40 years is selected. What is the probability that the mean gain for the sample was between 200 and 550? Looking for a Similar Assignment? Order now and Get 10% […]
The length of time a person takes to decide which shoes to purchase is normally distributed with a mean of 8.21 minutes and a standard deviation of 1.90. Find the probability that a randomly selected individual will take less than 5 minutes to select a shoe purchase. Is this outcome unusual? Looking for a […]
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