When consumers apply for credit, their credit is rated using FICO scores. Credit ratings are given below for a sample of applicants for car loans. Use the sample data to construct 99% confidence interval for the mean FICO score of all applicants for credit. If one bank requires credit ratings of at least 620 for a car loan, does it appear that almost all applicants will have suitable credit ratings

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?