Esmeralda collected data about the number of compact discs (cds) sold at a music store during part of the 1980s and early 1990s. an equation for the line of best fit for the given data is y = 518x - 43886 where x = 0 means the year 1900. the point (88, 1497) was one of the points. what is the difference between the observed value and the predicted value at x=88?

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers

Rewrite so the subject can be y in the formula d=m-y/y+n

(20 points) a bank has been receiving complaints from real estate agents that their customers have been waiting too long for mortgage confirmations. the bank prides itself on its mortgage application process and decides to investigate the claims. the bank manager takes a random sample of 20 customers whose mortgage applications have been processed in the last 6 months and finds the following wait times (in days): 5, 7, 22, 4, 12, 9, 9, 14, 3, 6, 5, 15, 10, 17, 12, 10, 9, 4, 10, 13 assume that the random variable x measures the number of days a customer waits for mortgage processing at this bank, and assume that x is normally distributed. 2a. find the sample mean of this data (x ě…). 2b. find the sample variance of x. find the variance of x ě…. for (c), (d), and (e), use the appropriate t-distribution 2c. find the 90% confidence interval for the population mean (îľ). 2d. test the hypothesis that îľ is equal to 7 at the 95% confidence level. (should you do a one-tailed or two-tailed test here? ) 2e. what is the approximate p-value of this hypothesis?