The scores on a standardized test are normally distributed with the mean of 750 and standard deviation 70. find the probability that a score is between 750 and 890. 2.28% 47.7% 50% 13.6%

The customer price index(cpi), which measures the cost of a typical package of customer goods,was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely.use data points to find such a line and then estimate the requested quantities