Question

The population mean of ages for all females on the Titanic (survivors and non-survivors) was 25.2 years. Is the sample data you were given for the female ages the same as the population ages? Use a .05 level of significance. Here is the data of sample ages (It could be different from the Titanic data you have in the last question so make sure you run the data again). 38, 26, 35, 27,14, 4, 58, 14, 55, 31,15, 8, 38

What test are you going to run? One mean t-test, one mean z-test, ANOVA, or Regression

correct null hypothesis (Ho):

correct alternative hypothesis (Ha):

Test Statistic:

P-value:

What is the conclusion when you compare the p-value and the level of significance (alpha)?

What is the conclusion based on the original claim?

Answer 1

x2 38 26 35 EXi = 3633 ñ 363 = 27.9 230 676 1225 729 196 27 [{x²-no? 58 14 55 31 113565-13(27.92302 13-) - 16.9039 3364 196 3025 961 225 84 1464 13565 8 38 363 Ho: el= 25.2 VIS Hill & 25.2 This is one mean t- test Test statistic, t= x-elol 27.9230-25.2 0.5808 sin 16.90 39/JB df = n-1= 13-1= 12 1.0 p.value= P. (Ital>t) = 2.pr. pr ltal >t) = 2.P( ta > 0.5808) = 0.5721 Decision Rule:- P-valtee : 0.5721) 20.05 fail to zgjeet Ho. we conclude thad the population mean fox of ages for a females on titanic was 25.2 years.