Question: When is the value of the standard deviation for a
When is the value of the standard deviation for a data set zero? Give one example of such a data set. Calculate the standard deviation for that data set to show that it is zero.
Answer to relevant QuestionsThe following table gives the frequency distribution of the numbers of computers sold during the past 25 weeks at an electronics store. Computers Sold Frequency 4 to 9............ 2 10 to 15........... ...The mean weekly wages of a sample of 15 employees of a company are $1035. The mean weekly wages of a sample of 20 employees of another company are $1090. Find the combined mean for these 35 employees. Given that A and B are two mutually exclusive events, find P(A or B) for the following. a. P(A) = .71 and P(B) = .03 b. P(A) = .44 and P(B) = .38 Amy is trying to purchase concert tickets online for two of her favorite bands, the Leather Recliners and Double Latte No Foam. She estimates that her probability of being able to get tickets for the Leather Recliners ...The probability that an open-heart operation is successful is .84. What is the probability that in two randomly selected open-heart operations at least one will be successful? Draw a tree diagram for this experiment.
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