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a. Having obtained a random sample from a population, you wish to use a chi-squared test to decide whether the population distribution is standard normal. If you base the test on six class intervals having equal probability under H0, what should be the class intervals?
b. If you wish to use a chi-squared test to test H0: the population distribution is normal with µ= .5, σ = .002 and the test is to be based on six equiprobable (under H0) class intervals, what should be these intervals?
c. Use the chi-squared test with the intervals of part (b) to decide, based on the following 45 bolt diameters, whether bolt diameter is a normally distributed variable with µ = .5 in., σ = .002 in.
Using twins means that only two diet variations can be tested at each blocking level. Construct this design and explain your reason for this particular construction.
Use the Histogram option from Data Analysis to examine whether the daily percentage scrap from the machine is normally distributed. Comment on the findings.
Complete the procedure on each of 36 occasions. Assuming we wich to be 99% certain of avoiding a Type I error, use these data to evaluate the union's claim.
a market research survey is available for no cost. using a decision tree analysis it is found that the expected value
Based on these data, is it plausible that the proportions of female office workers who often feel abused at work are the same for these countries?
suppose the coach of the football team wants to estimate the proportion of the population of fans who support his
If the shop does not want to give more than 1% of its customers a free lube and oil change service, how long should the guarantee be?
if a study had a result of f 2 147 4.56 p 0.003 how many groups were in the study and what was the sample
Construct a 95% confidence interval estimate of the mean difference between the before and after scores. Write a statement that interprets the resulting confidence interval.
As the teacher when situation like the above take place describe what would you say to guide children using effective communication and conflict resolution strategies. Be sure to respond based on the content
one article describes measurements of ammonium concentrations in mgl at a large number of wells in the state of iowa.
The standard deviation of the sample is 5. find the best point estimate of the mean. find the 95% condidence interval of the mean score for all golfers.
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