Suppose the length of songs in my playlist are uniformly distributed between 2.5 and 5 minutes. What is the standard deviation? Round answer to 3 decimal places (i. e. 0.123) If I sample 10 songs, what is the probability that the average song length is more than 3.5 minutes? Round answer to 3 decimal places (1.e. 0.123)

Use the given degree of confidence and sample data to construct a confidence interval for the population mean mu . assume that the population has a normal distribution. a laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 185 milligrams with sequals 17.6 milligrams. a confidence interval of 173.8 mgless than muless than 196.2 mg is constructed for the true mean cholesterol content of all such eggs. it was assumed that the population has a normal distribution. what confidence level does this interval represent?