A researcher wishes to see if the average number of sick days a worker takes per year is less than 5. A random sample of 32 workers at a large department store had a mean of 5.6 days. The standard deviation of the population is 1.2 days. Is there enough evidence to support the researcher's claim at α = 0.01.

rx and sx

step-by-step explanation:

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

step-by-step explanation:

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya

b. b < 1 might be the correct answer