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The probability worker to be is hardworking is 0.55 and 0.45 under-performing. Find the probability of getting at least an under-performing in an office with 4 workers.
forty-three percent of marriages end in divorce. you randomly select 15 married couples. find the probability exactly 5
a random sample of stat200 weekly study times in hours is as follows 2 14 15 18 20find the standard deviation.are any
A poll of 1,068 adult Americans reveals that 52% of the voters surveyed prefer the Democratic candidate for the presidency. At the 0.05 significance level, test the claim that more than half of all voters prefer the Democrat.
according to the sleep foundation the average nights sleep is 6.8 hours fortune march 20 2006. assume the standard
Be certain to mention the direction of the relationship, the strength of the relationship, and whether our findings are statistically significant
question 1 a researcher hypothesizes that individuals who listen to classical music will score differently from the
Plot the time series and find a three-years moving average to the data and plot the results - Compute a linear trend forecasting equation and plot the trend line.
a certain disease is found in one person in 5000. if a person does have the disease the test will show a positive
What is meant by an unbiased estimator? How is bias defined? (b) Draw a figure showing the sampling distribution of an unbiased and a biased estimator.
Find a research article and clearly define both the null and directional hypothesis that was or could have been tested during the statistical analysis of the data.
1. the epa wants to test randomly selected sample of n water specimens and test the mean daily rate of pollution
a river is rising at a rate of 3 inches per hour. if the river rises more than 2 feetit will exeecd flood stage. how
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