Question

section 9.5

A sample mean, sample size, and sample standard deviation are provided below. Use the one-mean t-test to perform the required hypothesis test at the 5% significance level x = 23, s = 6, n = 32, Ho H = 27, H.: H = 27 Click here to view a partial table of values of The test statistic ist=Q (Round to two decimal places as needed.)

Answer 1

1 boluns X = 239=8 , N= 32 Hou=27 Vs Hau<27 test statistic: t = X-1 23-27 8/532 The test statistic is t = -2.83 2.8284 - 2.83 d=0.05, df = n-1= 32-1=31 ta,nol Iti>ta, nii Reject Ho al &=5%. - 1.645 X = 32 s=g, n=24 Ho: 1= 26 Ma: 1726 i test statistic: t = -1 32-26 S/ = 3.2.659 = 3.27 The tesl statistic is t=3.27 . 1.714 d=0.05, df = n-1 = 24-1=23 : 1tl > ta,n-1 ; Reject Ho at a=54. - X=28 ,S=7 , n = 15 Ho: M=22 , Hail #22 (two sided) test Statistic : Z X-M 28-22 $/ 3.319 = 3.32 FISTS The test statistic is t=3.32 of=1% = 0.01 df an- 1 = 15-1 = 14 ; ta,n.i= = 2.977 Itly tani Reject Ha at &=1% Aim to test that the amount of television watched per day last year by average person dibbered from the value reporled in study A study reported that average person walehed 2.86 hours 07. television per day. .. Ho: 4 = 2.86 vs. Ha: 4 & 2.86