Of 150 Adults Who Tried a New Peach-flAvoured Peppermint Patty

question 89

Multiple Choice

Of 150 adults who tried a new peach-flavoured peppermint patty, 90 rated it excellent. Of 200
Children sampled, 123 rated it excellent. Using the 0.10 level of significance, can we conclude that
There is a significant difference in the proportion of adults and the proportion of children who rate
The new flavour as excellent? State the decision rule, the value of the test statistic, and your
Decision.

• A) Reject if z > 1.645 or < -1.645, z = -0.28, difference exists
• B) Reject if z > 1.645 or < -1.645, z = -0.28, no difference.
• C) Reject if z > 1.645 or < -1.645, z = -1.28, difference exists.
• D) Reject if z > 1.96 or < -1.96, z = -0.66, no difference.
• E) Reject if z > 1.96 or < -1.96, z = -2.26, difference exists.