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After extensive data analysis it has been determined that the weekly demand for a certain product of a given company is normally distributed with a mean 100 and standard deviation of 20.
Based on these sample data, is there sufficient evidence to conclude that the distribution of service time is not normally distributed?
A player throws a fair coin and wins $1 each time it's heads, but loses $1 each time it's tails. The player will stop when his or her net winnings reach $1, or after n throws, whichever comes sooner. What is the player's probability of winning, an..
A real estate agent wants to compare the variation in the selling price of homes on the oceanfront with those 3 blocks away A sample of 21 oceanfront homes sold within the last year revealed the standard deviation of the selling prices was 45,600.
For this set of numbers: 40 40 45 43 48 45 40 40 40 40 40 40 40 48 43 40 43 40 40 45 what is the mean, standard deviation.
A company has two assembly lines, each of which stalls an average of 2.4 times per week according to a Poisson distribution.
Determine the value of test statistic z using z = ^p-P ^pq/n. Claim is that proportion of drowning deaths of children attributable to beaches is more than 0.25, and sample statistics.
suppose heights of adults measured in inches are normally distributed with mean 70 inches and standard deviation 10
If the average income for workers in Canada (in 2010) is 32,200 CAD and the standard deviation is 47,000 CAD. What does this say about the distribution (of income)? Is it normally distributed? Why or why not? What conclusion can you make from this..
Many experiments have investigated the concept of state-dependent memory. Participants learn a task in a particular state-say, under the influence of a drug or not under the influence of the drug.
Unless otherwise noted, the given loads are superimposed loads; neglect the beam weight; neglect shear and moment considerations.
Test, at the 5 percent level, the hypothesis that an earthquake is equally likely to occur on any of the 7 days of the week.
sixty percent of the students at a particular community college are female. if 12 students at that community college
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