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The mean and median selling price of existing single-family homes sold in October 2005 were (in no particular order) $216,200 and $265,000. Which of the following most accurately explains which is the mean and which is the median and why?
The table below shows the scores of a group of 15 students in mathematics and art: Determine if the locations of distribution of scores for these students differ significantly for the two subjects. Use the hand calculation method and then use PHSta..
Level of education attained by the women from a rural region is divided into three categories: can read/write degree; primary degree; secondary and above degree
A textile manufacturer estimates that it produces bolts of cloth with flaws following a Poisson distribution that has an average of one flaw per 200 feet of cloth.
Researchers at a pharmaceutical company have found that the effective time duration of a safe dosage of a pain relief drug is normally distributed with mean 2 hours and standard deviation 0.3 hour.
A study of vehicle flow characteristics on acceleration lanes found that one out of every six vehicles uses less than 1/3 of the acceleration lane before merging into the traffic.
A seed distributor claims that 80% of its beet seeds will germinate. How many seeds must be tested for germination in order to estimate p, the true proportion that will germinate, so that the maximum error of the estimate is " = 0:03 with 90% con ..
A salesperson goes door-to-door in a residential area to demonstrate the use of a new household appliance to potential customers. She has found from her years of experience that after demonstration, the probability of purchase (long run average) i..
A sample of 25 students enrolled in the university indicates that X (bar) = $315.4 and s = $43.20.
Compute the coefficient of determination for bone loss and women's age and describe what this statistic means.
Suppose that you are purchasing cases of wine and that periodically you select a test case to determine the adequacy of the bottles' seals. To do this you randomly select and test 3 bottles int he case.
Find out the following Standard deviation of the swipe rate, What percentage of subway riders should re-swipe the card as they were outside acceptable range?
Let Z be the random variable giving the number of times the second biased coin (coin #2) comes up heads. What is the probability mass function of Z? What is the mean and variance of Z?
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