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Mario's weekly poker winnings have a mean of $395 and a standard deviation of $59. Last week he won $175. How many standard deviations from the mean is that?
a survey of 25 randomly selected customers found the ages shown in years. the mean is 32.56 years and the standard
What is the probability that no two of the dice land on the same number?
Shimano mountain bikes are displayed in chic clothing boutiques in Milan, Italy, and the average price for the bike in the city is $700.
You are asked to test the CFO's claim by examining monthly profits from the sample mega stores using the Z-test. State the decision rule using α = 0.05 significance level?
If he makes a profit of 50 cents on each cup of coffee and 40 cents on each doughnut, can he reasonably expect to have a day s profit of over $300? Explain.
Distinguish between a quota sample and a purposive sample.- What three criteria characterize good descriptions of data?
Why is the Great Awakening considered to be the beginning of an "American" identity?
She plans on bringing three of the seven books with her in a road trip. How many different ways can the three books be selected?
a coin is tossed 7 times. let a be the event that the first toss is heads. let b be the event that the fifth toss is
Recall that a graph is bipartite if and only if it is possible to colour the vertices with two colours, such that any two adjacent vertices have different colours. In this question, we will prove that all trees are bipartite by induction on the nu..
Batteries. A junk box in your room contains a dozen old batteries, five of which are totally dead. You start picking batteries one at a time and testing them.
A study of 20 worldwide financial institutions showed the correlation between their assets and pretax profit to be .86. At the .05 significance level, can we conclude that there is positive correlation in the population?
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