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Samples of the members of five different labor unions were asked whether they are for or against a certain piece of legislation:
Union 1 Union 2 Union 3 Union 4 Union 5 Total
For 74 81 69 75 91
Against 26 19 31 25 9
Use the 1% level of significance to test the null hypothesis that the corresponding true proportions are all equal
Find the matrix of expected values:
What test is appropriate for this problem?
State the null and alternate hypotheses
Find the test statistic
How many degrees of freedom will you use?
Find the critical value
Estimate the p-value
What is your conclusion?
Using a 5% level of significance, can we say that, generally there is important difference between satisfaction levels of mid country residents and coastal residents?
You want to know how the commuting time of your employees compare to Departments competing for the same staff, so you get some survey data on average commuting times for36 randomly selected people in your line of business.
A microwave manufacturing company has just switched to a new automated production system. Unfortunately, the new machinery has been frequently failing and requiring repairs and service.
Find out the following Standard deviation of the swipe rate, What percentage of subway riders should re-swipe the card as they were outside acceptable range?
More than 13 successes in 19 trials with a 40 percent chance of success. (Round the answer to 4 decimal places.) Fewer than 7 successes in 15 trials with a 40 percent chance of success. (Round the answer to 4 decimal places.)
You're responsible for planning parking needed for a new 256-unit apartment complex, and you're told to base the needs on the statistic 'average number of vehicles per household is 1.9'.
The U.S. Fish and Wildlife Service's report on the bass population in the North American lakes indicated average weight of the fish to be 3.0 lb.
The amounts dispensed by a cola machine follow the normal distribution with a mean of 7 ounces and a standard deviation of 0.10 ounces per cup.
constructing a histogram requires dividing the range of the data into class intervals or bins the recomended number of
question when mendel conducted his famous genetics experiments with peas one sample of offspring consisted of 580 peas
a survey was conducted of 611 office workers to determine telephone answering practices i.e how many were able to
a draw a scatter plot of arm span x versus height y and the regression line.b obtain the correlation coefficient r the
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