Reflect on the “Managing Ashland MultiComm Services” case information presented throughout the assigned questions in Part 1. Write an explanation of how you would respond to the following scenario: You have been asked by J. Doe, the leader of the technical operations department, to only test to see if there is a difference between the mean target and the actual results. Some employees in the department have mentioned that J. Doe is seeking approval for new equipment that will increase speed. Prior requests have been declined and the leader wants to use your results to prove new equipment is required. […]
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A college teacher wishes to estimate the mean number of hours worked per week at non-college related jobs by full-time students at the college. He…
A college teacher wishes to estimate the mean number of hours worked per week at non-college related jobs by full-time students at the college. He desires a margin of error of 1.5 hours. Past studies suggest that a population standard deviation of 14.5 hours is reasonable. Estimate the minimum sample size needed to estimate the population mean with the stated accuracy.
For the given event, state whether the difference between what occurred and what you would have expected by chance is statistically significant or…
For the given event, state whether the difference between what occurred and what you would have expected by chance is statistically significant or not statistically significant. In 36 rolls of two six-sided dice, the numbers on the dice add to 2 ten times.
Suppose you have an experiment where you flip a coin three times. You then count the number of heads.) State the random variable.) Write the…
Suppose you have an experiment where you flip a coin three times. You then count the number of heads. a.) State the random variable. b.) Write the probability distribution for the number of heads. c.) Draw a histogram for the number of heads. d.) Find the mean number of heads. e.) Find the variance for the number of heads. f.) Find the standard deviation for the number of heads. g.) Find the probability of having two or more number of heads. h.) Is it unusual to have the three flips result in two heads? Why or why no
True or False: A boxplot is a useful way of examining the distribution of a dichotomous variable.
True or False: A boxplot is a useful way of examining the distribution of a dichotomous variable. (I answered false because boxplot and histograms are for continuous variables not categorical variables that often uses bar graphs where each category gets its own bar. Is this right or wrong?)
