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[Step-by-Step] The marketing department has historical information that says that 70 \% of all people surveyed would respond positively to the question "Do you

Question: The marketing department has historical information that says that $70 \%$ of all people surveyed would respond positively to the question "Do you prefer a TV with a screen ratio design that is significantly greater than 4:3?" As we can see from the last question, this time there was a total of 72 of the 100 people who responded positively to this question. At the 0.05 level of significance has there been a significant increase in the proportion of people who would now respond positively to the same question?

State the Null and Alternative Hypotheses.
Determine the test statistic.
Determine the $p$ -value.
Interpret the results (decision and summary).

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[Step-by-Step] The marketing department has historical information that says that 70 \% of all people surveyed would respond positively to the question "Do you

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