1. In a Pew Research Center survey of 1040 randomly selected smartphone owners in the U.S, 28% of them said that they have no lock screed on their phones. Pew Research Center claims that more than of smart phone owners have no lock screen on their phones. Using a significance level of 0.05 test the claim and answer the question below.
   1. Are we asked to test a claim about a population proportionor population mean? Justify your answer.

1. If we are testing a claim about a population mean, would we use the z-distribution or t-distribution. Why? Explain. OR write N/A if this does not apply.

1. List and check any requirements that need to be met. Justify why each requirement is met.

1. State the null and alternative hypotheses symbolicallyand with a complete sentence.

1. Is the test a two-tailed, left-tiled, or right-tailed?

1. The p-value for this claim is 0.0132. State your conclusion in context of the problem?