You usually buy a 16.5-ounce bottle of shampoo. there is a new bottle that says it gives you 30% more free. use the drop-down menus to build an equation that could be used to find the size of the larger bottle, x.

Nnnnneeedd 1.find the residual if you know the actual number is 5.2 and the predicted value is 4.8

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?