SOLUTION: A random survey undertaken by telephone by the Barrie Examiner revealed that 140 of the 250 people called supported a �carbon tax�. Test the alternative hypothesis that >50% of th

Question 730301: A random survey undertaken by telephone by the Barrie Examiner revealed that 140 of the 250 people called supported a �carbon tax�. Test the alternative hypothesis that >50% of the people support the carbon tax.
I am trying to solve this with the 5 steps of hypothesis testing. Please show me all steps involved that leads to the final value of my *test statistic. I have tried to start�
Step 1: a. Amount of people that support the carbon tax.
b. H_O: μ<50%
〖 H〗_a: μ> 50%
Step 2: a. Normality is assumed, CLT with n=250
b. z, σ= ?;
c. α= 0.05
Step 3: a. x̄ = ?, n = 250
b. z-(x ̄ .μ)/(σ/√n) �Do I use this formula?
z*=/(/√)=
Step 4: a. Probability distribution for zcrit= ? with x= ?
b. The calculated test statistic z*= ? is or is not in the critical region.
c. P =
d. p-value is or is not smaller than α
Step 5: a. Reject Ha or failed to reject?
b. There is sufficient evidence to conclude that �.., at the P- �..level of significance. The test results do or do not support the claim.

Answer by lynnlo(4176) (Show Source): You can put this solution on YOUR website!

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