Multiple Choice
Of 150 adults who tried a new peach-flavoured peppermint patty, 87 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 = -0.66, no difference.
B) Reject if z > 1.645, z = -0.66, no difference.
C) Reject if z > 1.645 or < -1.645, z = -5.28, 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.
Correct Answer:

Verified
Correct Answer:
Verified
Q47: i. If the null hypothesis states that
Q48: For a hypothesis comparing two population means,
Q49: Married women are more often than not
Q50: An investigation of the effectiveness of a
Q51: An investigation of the effectiveness of a
Q53: A local retail business wishes to determine
Q54: Married women are more often than not
Q55: Suppose we are testing the difference between
Q56: i. We use the pooled estimate of
Q57: A recent study compared the time spent