Tat its rs spend their break age volunteer workers recorded their breaks over the course of one week. The result w mple times. This sample had a mean of 11.5 minutes and a sample standard deviatic tes. Assuming that this sample is representative of all of the company's workers, ne the 90% confidence interval of the mean break time of the whole company.
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- This research was conducted with Korean adolescents in the Los Angeles area. Would you be willing to generalize the results of this study to Korean adolescents who live in other regions of the country? Why or why not.The mean change in muscle thickness observed after a 4-week training regimen was 4 mm, and the 95% confidence interval (CI) for mean change was (-0.5, 8.5). Which is the best scientific conclusion for the effectiveness of this regimen ?Aassume that adults have iq scores that are normally distributed with a mean of 96.1 and a standard deviation 18.2 findthe first quartile which is the iq score separating the bottom 25% from the top 75% first quartile is
- Tesla claims that it’s latest battery will take only 1 hour to recharge and the battery will last more than double the time of a normal battery. On average, their battery lasts for 70 months. A research group wanted to test that claim. They took a sample of 50 batteries and they found that on average a Tesla battery would last 67 months with a standard deviation of 3.5 months. Using a 3% significance level can you conclude that the mean life of all the Tesla batteries is less than 70 months. (Use the P values approach)Prob & Stats Unable to solve 90% confidence interval of the differences in the nurses.I will send the rest of question in a bit because of your guidelines
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