An advertising firm has decided to ask 110 customers at each of four local shopping malls if they are willing to take part in a market research survey. At a = 0.05 is there evidence to show that the proportions are not all the same. Willing Willing Not Willing What are the expected numbers? (round to 3 decimal places) B A The test value is: A 66 44 Not Willing The hypotheses are Ho: PA HA: At least one of the proportions is different. (claim) Since a = 0.05 the critical value is 7.815 = PB PC PD The p-value is B 61 49 = с C 70 40 (round to 3 decimal places) (round to 3 decimal places) D 65 45 D

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