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A poll of 1100 randomly selected students in grade 6 trrough 8 was conducted and found that 47% enjoy playing sports. would confidence in the results increase if the sample size were 3600 instead of 1100. why or why not?
Such that setting the two equations together we see that at t=4 seconds, the distance that Peter travelled is the same as the distance of the room 40ft.
Research question : At α = . 05, is cockpit noise level independent of flight phase?
Estimate the total number of cases sold along with the standard error of your estimate. Estimate the average number sold per supermarket, along with the standard error of your estimate.
In a random sample of 80 items, the defect rate is 5% but the manager claims that this is only a sample fluctuation and production is not really out of control. At the 0.01 level of significance, does the data provide sufficient evidence that the ..
Let n be number of documents in (millions) labeled as classified in year that is t years since 2000. Determine the equation of linear model to explain the data.
A pinochle deck has 48 cards, two of each of six denominations (9, J, Q, K, 10, A) and the usual four suits. In a hand of 12 cards, what is the probability of getting a "bare" roundhouse, namely a king and queen of each suit and no other kings or ..
Find the lowest possible score a candidate can score and still qualify. Assume the scores are normally distributed.
The confidence interval for proportion of adults who approve of the candidate is ____
Determine the area under the normal curve with mu = 8 and sigma = 3. If Mary gets 90 on a physics test where mean is 85 and standard deviation is 4.59, where does she stand in relation to her classmates?
Solar cells are attached to a panel with a new heat resistant adhesive. The adhesive must provide 2.80 pounds of force in order to hold the cell on the panel. A random sample of 50 cells is tested and the following forces are necessary to break th..
An auditor for Health Maintenance Services of Georgia reports 40% of policyholders 55 years or older submit a claim during the year. Fifteen policyholders are randomly selected for company records.
Explain the difference between testing a single mean and testing the difference between two means. What two assumptions must be met when one is using z test to test differences between two means?
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