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A p-chart has a lower control limit of .05 and an upper control limit of .07. A newly hired quality control technician made an error by not drawing the prescribed sample size. He drew a random sample of 100. What control limits should be applied to his sample?
a) 0,.0625
b) 0,.0988
c) 0,.1312
d) 0,.1614
e) .0025,.0275
Run an ANOVA using only groups 1 to 6 (You can hide group 7 from the analysis by data followed by select cases and then you filter out group 7 by if GROUP~= ). Also run the posthoc tests LSD and Bonferroni.
Compare your best difference to the result from an ordinary two-sample t-test between these groups. Comment the difference.
To select a _________ sample, an intact group of subjects that represent the population is selected.
Find the probability that at least one subject experiences headaches. Is it unusual to have at least one of six subjects experience headaches?
At α = .01, did yellow fire trucks have a considerably lower accident rate? Determine sample proportions and z test statistic.
Calculate descriptive statistics for each stock and the S&P 500. Comment on your results. Which stocks are the most volatile? Calculate the value of beta for each stock.
By using.02 level of significance, carry out a 5-step hypothesis testing procedure to find out if new processes considerably reduced the wait time.
If is the proportion of the next 100 shoppers that buy a packet of the crackers after tasting a free sample, then the probability that fewer than 30% buy a packet after tasting a free sample is approximately.
An experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield. There were 64 plots, and each of the 16 factor combinations was randomly assigned to 4 plots
The standard deviation of the differences d for the paired sample data s d = ____________
Find the probability of getting a head and rolling a six
Find the mean and standard deviation of X, the number of students in class, who will develop influenza.
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