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P Do Homew... Do File Edit View Favorites Tools Help Search google.com. Ask.com Se.. Chamberlain College ofN.. Tameka Roberts Week 7 Homework 40 pts Overview 327 Ex. Scores 0.4 of 2 pts HW Score: 67.77 (27.11 of 40 pts) 20 of 20 compl... A travel association claims that the mean daily of $110 and a standard deviation of $5.50. Is there enough evidence to reject the claim at a 0.05 Complete parts (a) through (d) below meal cost for two adults traveling together on vacation is $105. A random sample of 15 such groups of adults has a mean daily meal cost y Help Me Solve This h Vew an Example (a) Write the claim mathematically and identify Ho and H, Choose the correct answer below Ho: > 105 H, HS105 n,p2105 Ha: 105 (b) Calculate the standardized test statistic. 2- Ask ly instructor [SL(Round to two decimal places as needed.) Print Enter vour answer in the ansner box, then cick Check Answer Save .100% .

Solution

Formulating the null and alternative hypotheses,              
              
Ho:   u   =   105  
Ha:    u   =/   105  
              
As we can see, this is a    two   tailed test.      
              
              
Getting the test statistic, as              
              
X = sample mean =    110          
uo = hypothesized mean =    105          
n = sample size =    15          
s = standard deviation =    5.5          
              
Thus, t = (X - uo) * sqrt(n) / s =    3.520893951 [ANSWER]  
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