Sandra is filling up her swimming pool with a hose. The hose could fill up the swimming pool in 10 hours. However, there is a hole in the lining of the pool and it is losing water. Alone, the hole would empty the pool in 15 hours. How long will it take Sandra to fill the pool?​

What does the sign of the slope tell you about a line?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

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?