In a recent poll, a random sample of adults in some country (18 years and older) was asked, "Wher likely to buy it?" The results of the survey, by age group, are presented in the following contingency
Purchase likelihood 18-34 35-44 45-54 55+ Total
More likely to buy a product emphasized as “made in our country”?
219 369 385 405 1378
Less likely
28 8 29 16 81
Neither more nor less likely 289 213 158 119 779
Total
536 590 572 540 2238
(a) What is the probability that a randomly selected individual is 45 to 54 years of age, given the ind
The probability is approximately
(Round to three decimal places as needed.)

Can someone me with this problem . show your work .

Which number produces a rationale number when multiplied by 1/5

(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?