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Need help with 95% confidence interval. Have 5 that need to be figured out. The five with the Mean listed first and the standard deviation next are as follows: Mean: 20,330.5; SD: 53,510.2 Mean: 5.417; SD: 4.336 Mean: 2.000 SD: 3.684 Mean: 1.637 SD: 0.971 Mean: 4.557 SD: 4.028. Break it down step by step.
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4. A simple random sample of 300 items is selected from a large shipment, and testing reveals that 4% of the sampled items are defective. The supplier claims that no more than 2% of the items in the shipment are defective. Carry out an approp..
How did the media article do at explaining the findings? Is their summary accurate or misleading? Although the article may contain statistical concepts beyond the level of this class, it will most likely be based in things that we are learning...
Develop a 95% confidence interval estimate of the population mean sales price and population mean number of days to sell for Gulf View condominiums. Interpret your results.
Let X denote the mean of a random sample of size 128
Data Analysis and Statistical Modeling for Business
One measure of the risk or volatility of an individual stock is the standard deviation of the total return (capital appreciation plus dividends) over several periods of time. Al though the standard deviation is easy to compute, it does not tak..
The manager of a gas station and convenience store
The marketing team from Mi Casa Front Porch Restaurant is looking to promote the restaurant on the internet. They want to provide a realistic view of ranges for average bill for a party of 2 for lunch and dinner. They have gathered the following data..
Construct a 95% confidence interval for the mean number of hours the batteries will last on these players - Determine the test statistic and determine the P-value
1. following are positions taken by twelve senators on a half dozen key issues. the issues are scaled from 1 to 5 with
What would be the 80th percentile for height?
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