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47% of students have children under 17 living at home with them. Find the probability that a random sample of 800 students will return more than 50% students with children under 17 living at home with them.
The researcher in exercise decides to conduct the same study using a within - participates design to control for differences in cognitive ability.
Calculate a 99% confidence interval for the true mean difference between pretreatment and after treatment testosterone levels of young male TBI patients.
At α = 0.01, is the degree of certainty independent of credits earned?
What control chart(s) would you use for this data and what are the final control limits?
Calculate the correlation between decorating and Christmas enjoyment - Maximize Wayne's studying effectiveness.
Evaluate the mean, the median, and the mode of the salaries. Which best describes a typical salary and Evaluate the range, variance, and standard deviation of the data set. Interpret the results in the context of the real-life setting.
The mean number of passengers per flight is 160 with a standard deviation of 20. The aircraft used for the route has 200 seats.
A food snack manufacturer samples 13 bags of pretzels off the assembly line and weighs their contents. If the sample mean is 14.7 oz. and the sample standard deviation is 0.50 oz., find the 95% confidence interval of the true mean.
Girl B throws 15 times, with a prob. of success = 0.2. And girl C throws 20 times, with a probability of success equal to 0.1. Determine the probability that the target will get hit at least 12 times.
When using past data, I have found that the proportion of items rejected by quality control personnel is about 3%. We normally make 5000 items per day. For a p chart, what are the upper and lower control limits?
Determine the probability of selecting sample with a mean of more than $100,000 but less than $112,000.
If 900 users visited the site, would the probability that more than 250 of them click on an ad be higher or lower than the answer found in part
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