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Removing water from paper. The percentage of water removed from paper as it passes through a dryer depends on the temperature of the dryer and the speed of the paper passing through it.
A laboratory experiment was conducted to investigate the relationship between dryer temperature T at three levels (100°, 120° and 140°F) and exposure time E (which is related to speed) also at three levels (10, 20, and 30 seconds).
Four paper specimens were prepared for each of the 3 × 3 = 9 conditions. The data (percentage of water removed) are shown in the accompanying table. Carry out a complete analysis of the data using an available statistical software package.
Was your test one-tail upper tail, lower tail, or two-tail? Explain why you chose that kind of test in this situation. Explain what your P-value means in this context.
Find the probability that the test for a pooled sample of k people will be positive - what is the expected value of the number X of tests necessary under plan
Find the mean and the variance of the hypergeometric distribution with n = 3, N = 16, and M = 10, using (a) the results of Exercise 64;
A bacteria culture initially contains 2000 bacteria and doubles every half hour. Find the size of the baterial population after 40 minutes. Find the size of the baterial population after 7 hours.
a repeated-measures study comparing two treatments with n 4 participants produces md 2 and ss 75 for the difference
What are the differences between reference groups and referent systems?
The Law of Increasing Entropy is an impenetrable barrier which no evolutionary mechanism yet suggested has ever been able to overcome. Evolution and entropy are opposing and mutually exclusive concepts. If the entropy principle is really a univers..
direct computers holds a 16 share of the personal computer market. suppose a market researcher believes that direct
the advertising firm of mcmann and tate has put out bids for two separate contracts. based on past experience they
Comparing the lifetimes of two brands of penlight batteries, a researcher has randomly selected 10 batteries of brand A and 10 of brand B, then subjected each battery to the same usage test. Given the lifetimes listed below and using the 0.05 lev..
one piece of pvc is to be inserted inside another piece. the length of the first piece is normally distributed with a
In classifying hypertension, three categories are used: individuals whose systolic blood pressures are less than 140, those with blood pressures between 140 and 160. and those with blood pressures over 160.
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