Question

After a two-month stay-home order, a poll evaluating support for “multi-stage reopening” in California randomly selected 268 California residents and reported a 60% supportive rate. Carry out a hypothesis test with 5% significance level to check whether a majority of California residents are supportive of the multi-stage reopening.

a. Write the hypothesis in symbols or words

b. Check the two conditions for CLT.

c. Calculate the test statistics

d. Use the p-value or critical value approach to make your conclusion at 5% significance level.

one tail (upper)	0.1	0.05	0.025	0.01	0.005
two tails	0.2	0.1	0.05	0.02	0.01
z value	1.28	1.645	1.96	2.32	2.58

Answer 1