Question

10.4.16-T Question Help Suppose the mean wait-time for a telephone reservation agent at a large airine is 45 seconds. A manager with the airline is concemed that busine may be lost due to customers having to wait too long for an agent. To address this concem, the manager develops new airline reservation policies that are intended to reduce the amount of time an agent needs to spend with each customer. A random sample of 250 customers results in a samp mean wait-time of 44.4 seconds with a standard deeviation of 4.3 seconds. Using a 0.05 level of significance, do you believe the new policies were effective in reducing wait time? Do you think the results have any practical sianificance? Determine the null and altemative hypotheses Ho 45 seconds 45 seconds H,: Click to select your answer(s) and then click Check Answer 5 Parts remaining Clear Al Check Answer PM D4 DELL Y O P M Al Ctrt Home

Answer 1

solis megn= 94.4 SE 403 ha 250 any 20.05 Hoi l = 45 . H: 4 95 to reducing mean time Test sklis ties are Ta - 2.20.69 degree of pare dom (hP12 299 critical value = -tx, ht) = - 1,651 Galculated velue of t i < the critical value | -21206225-11651) So, we Meject Ho hall hypothesis camel accept Hy altennatis hanya posthesis C4%98). gep, new folicies cuerp effectiveness 's redercing wait ting