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A new student grade balance was checked for stability/ accurancy by weighinga 100 gram weight five times. The results were: 124, 82, 92, 108, 104 grams. y bar= 102 grams, s= 16 grams. check to see if the average weight reading was statistacally equal to 100 grams or not. use he usual five step procudure at sigma= .05.
Media Matrix and Jupiter Communications gathered data on the time adults and the time teens spend online during a month (USA Today, September 14, 2000).
Calculate the population mean and population standard deviation.
Compute the coefficients of the regression line, interpret the coefficients - sample of 10 games and recorded the number of beers sold and the temperature in the middle of the game.
the table below contains average house prices median income average monthly rent and percentage of flats that are
At the level of significance, is there evidence that the population mean force is greater than 1500 pounds?
I did a study correlating net profit per location with expenditures on an in-house promotion, and got a correlation of about .15, and that was received very well.
Examine the data below showing the weights (in pounds) of randomly selected checked bags for an airline's flights on the same day. (a) At α = .05, is the mean weight of an (a) At α = .05, is the mean weight of an international bag greater? Show the h..
Give an example representing a discrete probability distribution and another example representing a continuous probability distribution. Explain why your choices are discrete and continuous.
identify the type of sampling used random systematic convenience stratified or cluster. to estimate the percentage of
Is there sufficient data to determine that these student data reflect population data? Determine using alpha .05 as critical value.
If the interval of tiem between eruptions is normally distributed with standard deviation 21.25, then what is the probability that a randomly selected time interval between eruptions is longer than 95 minuntes.
the mean resting pulse rate for a large group of varsity athletes was 72 with a standard deviation of 9.46. what
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