Of 150 adults who tried a new peach-ﬂavoured peppermint patty, 99 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.

Question

Of 150 adults who tried a new peach-ﬂavoured peppermint patty, 99 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 > 1.96 or < -1.96, z = -2.26, difference exists. B) Reject if z > 1.96 or < -1.96, z = -0.66, no difference. C) Reject if z > 1.645 or < -1.645, z = 0.87, difference exists. D) Reject if z > 1.645 or < -1.645, z = -0.28, difference exists. E) Reject if z > 1.645 or < -1.645, z = 0.87, no difference.

Quizplus · Accepted Answer

Reject if z > 1.645 or < -1.645, z = 0.87, no difference.

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