The null hypothesis should be rejected. The null hypothesis should be rejected N
ID: 3220824 • Letter: T
Question
The null hypothesis should be rejected. The null hypothesis should be rejected No conclusion should be reach One tailed test should be used. How many Kleenex should the Kimberly Clark Corporation packages of tissues contain? Researchers determined that 60 tissues is the average number of tissues used during a cold. Suppose a random sample of 100 Kleenex users yield the following data number of tissues used during a cold: X - 52.S - 22. Use a level of significance of 0.10 to test the claim that the number of tissues used during a cold is less than 60. The null and alternatives hypotheses are: H_0:mu lessthanorequalto 60 and H_1:mu > 60 H_0:mu greaterthanorequalto 60 and h_1:mu 60 H_0:X greaterthanorequalto 60 and H_1:XExplanation / Answer
13) option B is correct
14) for std error =std deviation/(n)1/2 =2.2
hence test stat t=(X-mean)/std error =(52-60)/2.2=-3.64
option B as we do not know population std deviation
15) rejection critical value on bell cruve will be t<-1.2902
16) option A is correct