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Question: Two machines filling bottles of shampoo. One machine had a mean of 500 ml, SD 10 ml, the other a mean of 750 ml, SD 15 ml. For each machine calculate the lower and upper amounts (in ml) between which:
(a) 90 per cent of all output will fall
(b) 95 per cent of all output will fall
(c) 99 per cent of all output will fall.
If you toss a fair coin three times and get heads all three times, then the probability of getting a tail on the next toss is much greater than a half.
question 1 a breeder records probabilities for two variables in a population of animals using the two-way tablegiven
Interpret the results at α = .01. (c) Is normality assured? (d) Is the difference large enough to be important? (e) What else would medical researchers need to know before prescribing this drug widely?
support requests arrive at a software company at the rate of 1 every 20 minutes. assume that the requests arrive as
suppose that x1...xn form a random sample from a normal distribution with meanu u pronounced mu and variance1.a write
Suppose that network breakdowns occur randomly and independently of each other on an average rate of three per month. (a) What is the probability that there will be just one network breakdown during December? Interpret.
1. the labor relations manager of a large corporation wished to study the absenteeism among workers at the companys
Apparently, the mere feeling of being watched - even by eyes that were not real - was enough to encourage people to behave more honestly.
Construction of frequency distribution table for the given continuous data.
1. other things being equal as the sample size increases the standard error of a statistica. increasesb.
a machine that cuts corks for wine bottles operates in such a way that the distribution of the diameter of the corks
A stockbroker at Critical Securities reported that the mean rate of return on a sample of 10 oil stocks was 12.6 percent with a standard deviation of 3.9 percent. The mean rate of return on a sample of 8 utility stocks was 10.9 percent with a standar..
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