Question

From previous studies, it is concluded that 33% of workers got their job through networking. A researcher claims it has decreased and decides to survey 100 adults. Test the researcher's claim at the α=0.05α=0.05 significance level.

Preliminary:

1. Is it safe to assume that n≤0.05n≤0.05 of all subjects in the population?
   • Yes
   • No
   
   
2. Verify nˆp(1−ˆp)≥10.np^(1-p^)≥10. Round your answer to one decimal place.
   
   nˆp(1−ˆp)=np^(1-p^)=

Test the claim:

1. Express the null and alternative hypotheses in symbolic form for this claim.  
   
   H0:H0:  
   Ha:Ha:  
   
   Use the following codes to enter the following symbols:
        ≥≥ enter >=
        ≤≤ enter <=
        ≠≠ enter !=
   
2. After surveying 100 adult Americans, the researcher finds that 39 workers got their job through networking. Compute the test statistic. Round to two decimal places.
   
   z=z=  
   
3. What is the pp -value? Round to 4 decimals.
   
   p=p=  
   
4. Make a decision based on α=0.05α=0.05 significance level.
   • Reject the null hypothesis.
   • Do not reject the null hypothesis.
   
   
5. What is the conclusion?
   • There is sufficient evidence to support the claim that 33% of workers got their job through networking has decreased.
   • There is not sufficient evidence to support the claim that 33% of workers got their job through networking has decreased.

Answer 1