the first two terms of a geometric sequence are -2 and 3. Determine the smallest number of terms that will yield a sum larger than 12?​

Im literally having a mental breakdown

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?

Ireally don't understand this, i'm really an idiot but i want to know how to figure this out. !