Find probability that one of three chips last for long
Let X1, X2, and X3 be independent lifetimes of memory chips. Suppose that each Xi has the normal distribution with mean 300 hours and standard deviation 10 hours. Compute the probability that at least one of the three chips last at least 290 hours.
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find the probability that the average diameter of those sand dollars is more than 4.13 centimeters. Assume that the variable is normally distributed.
The ages of 25 employees in a company are listed below in a stem and leaf plot. What is the probability that a worker chosen at random will have an age greater than or equal to 30 and less than or equal to 39?
The normal distribution with mean 300 hours and standard deviation 10 hours. Compute the probability that at least one of the three chips last at least 290 hours.
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The waiting times have a standard deviation of 4.9 minutes. Use a 0.025 significance level to test the claim that with a single line, waiting times vary less than with individual lines.
Casino Windsor conducts survey to determine the opinion of its customers. Among other questions, respondents are asked to give their opinion about "Your overall impression of Casino Windsor". The responses are: Excellent, Good, Average, Poor. In a
What are "effective" strategies for a global company to adapt to a local culture?
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