Katrina needs 5 feet of material to make a pillow. how many yards does she need to buy? which of the following would be the best explanation of how this problem was solved?
a five feet is equal to 1 yard, 2 feet. katrina needs 1 and 2/3 yards of material to make her pillow.
b one yard equals 3 feet. five feet is equal to 1 yard, 2 feet. katrina needs 1 and 2/3 yards of material to make her pillow.
c one yard equals 3 feet. katrina needs 1 and 2/3 yards of material to make her pillow.
d one yard equals 3 feet. one foot equals 12 inches. five feet is equal to 1 yard, 2 feet. five feet is equal to 60 inches. katrina needs 1 and 2/3 yards of material to make her pillow. if she wants to add some fringe, she might want to buy an extra yard.

(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?