SURFACE AREA OF CYLINDERS After cias, Mrs. Sandoval picked up several pieces of paper containing students' work from the day. ELLA SHAWN 2nrh 2(3.14)(8)(5) 25 12 units LEVI 2h + 2 2[3.14X2)(5) + 2(3.142) 87 92 units 2(3.14)(B)(4) + 2(3.14)(8) 602.88 units KATRINA LORENZO 2nr 2 2(8.14)(B)(5) + 2[3.14 (8) 659.12 units RUDY 2h + 2 2(3.14)(4)(a) + 2(3.14)(44) 301.44 units 23.142)(5) 62.8 units Find the total surface area of a cylinder that Katrina was working on. Use (3.14) for pi. 87.92 units 87 units O 86.92 unitsa O 86 units

(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?