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How many different permutations of the word SCISSORS are there? How many permutations have all four S's together? How many permutations have 3 S's together and one separate?
Using your workplace, present or prior, or an organization with which you are affiliated, identify a quantitative and a qualitative variable of interest to you.
According to the survey, 37% of the adults are concerned that employers are monitoring phone calls. Use the binomial distribution formula to calculate the probability that:
Define Autocorrelation in the following terms. In which type of regression is it likely to occur? What is the negative impact of autocorrelation in a regression?
Draw a tree diagram representing this experiment. Use this tree diagram to find the probabilities below.
(A) What is the probability that none of the components will fail ??? (B) What is the probability that at least one component will fail ???
The linear correlation coefficient, r, measures the strength of the linear relationship the variables in a set of ordered pairs (x,y). What is the maximum and minimum values for r?
Can we conclude from this that most workers there earn between $25 and $35 per hour? Is this the right interpretation for the margin of error?
A farm brings 15 tons of watermelon to market. Find a 90% confidence interval for the population mean cash value of this crop. What is the margin of error?
What are the minimum and maximum heights it should use as a basis for its design?
There is concern about the percent of on-time flights. A recent survey of two major airlines yielded the following results. At α = 0.05 test the claim that there is a difference in proportions of on-time flights.
The bin with replacement, find the probability that all the bulbs selected are good ones. Round to the nearest thousandth if necessary.
As the correlation coefficient increases from 0.85 to 0.88, do the points of the scatter plot move toward the regression line, or away from it?
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