In 1905, an unknown patent clerk named Einstein published three new concepts in a single journal, one being “On the Electrodynamics of Moving Bodies,” more commonly
known now as the theory of special relativity. Einstein realized that mass and energy are
manifestations of the same thing, elegantly stated in what is now the most famous
equation in the world, E = mc , with energy (E), mass (m), and the speed of light (c).
A) Rearrange the equation to solve for m
B) Rearrange the equation to solve for c
C) If the mass and speed of light were given, which variable would you solve for to
get the most accurate calculation?

(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?