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A wireless company surveyed 276 android phone owners and found that 223 of them planned to purchase another android. What is the lower bound for the 95% confidence interval for the proportion of android users that plan to purchase another android?
Discuss which analysis of variance should be applied when an experiment has more than one independent variable. Discuss the assumptions and limitations of the analysis of variance in comparison with the t test including a discussion of post hoc te..
Assume the data are normally distributed and normalize the sample mean. What is the probability that a sample mean would fall below 24 days based on this normalized statistic t where the actual standard deviation is unknown and the sample estimate..
Order pizza with this new crust again. Calculate a 98% confidence interval for the proportion of customers who would order the new thin crust pizza again.
An extended-life light bulb claims the bulb has an average life of 12,000 hours, with a standard deviation of 500 hours. If the distribution is bell shaped and symmetrical
A cardiologist is interested in the mean recovery period of her patients who have had heart attacks.
an accounting firm has noticed that of the companies it audits 85 show no inventory shortages 10 show small inventory
The probability that a consumer entering a retail outlet for microcomputers and software packages will buy a computer of a certain type is 0.15.
Describe the three forms or sources of depreciation experienced by a property structure as it ages. Is there anything an investor can do to prevent.
Do a complete analysis of the data (with square feet as the independent variable), including the graph, equation, interpretation of slope.
What is the regression equation?- What is the 90% confidence interval for the slope?- Test the null hypothesis "X does not affect Y " at an α of 1%.
an english teacher believes that there is a relationship between gender and reading ability. he takes a random sample
Assume that demand for the upcoming weekend is normally distributed with a standard deviation of 30. (a) What is the probability that all the hotel's room will be rented?
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