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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.
The cutoff (or cutoffs), and the score of the sample on this distribution. Then explain your answer to someone who has never had a course in statistics (but who is familiar with mean, standard deviation, and Z scores).
consider the following sample of seven chemical yields801814784836820901853use this sample to test that the population
Proportion nonconforming is 0.10. what is the probability of (1) 1 nonconforming unit in the sample (b) 1 or less (c) 2 or more?
a traditional not agresti-coulls two-sided confidence interval for the proportion of people who support mr. green in an
The Nile Superstore is conducting a survey of consumer preferences for a new wireless, e-book reader. A sample of 160 people reveals that 120 would buy the new reader. Estimate the value of the population proportion.
a university found that 20 of its students withdraw without completing the introductory statistics course. assume that
a sample of the homes currently offered for sale revealed that the mean asking price is 75900 the median 70100 and the
In part b, the sample have greater variability than part a, but the sample sizes are unchanged. how does the larger variability affect the size of the standard error for the sample mean?
Using a present value table, your calculator, or a computer program present value function, answer the following questions. Assistance is needed with the formula to calculate the problems:
Use differential calculus to find both sales volume at which revenue is maximised and the maximum revenue available from sales of product X.
Find the confidence interval for the mean price, μ, of all dealer sticker prices of new cars: for a confidence level of 90% in thousands of dollars:
determine the area under the standard normal curve in parts a through c below. find the area under the normal curve to
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