MATH 225N WEEK 7 ASSIGNMENT: CONSTRUCT
HYPOTHESIS TEST FOR PROPORTIONS
1. Steve listens to his favorite streaming music service when he works out.
He wonders whether the service's algorithm does a good job of finding
random songs that he will like more often than not. To test this, he listens to
50 songs chosen by the service at random and finds that he likes 32 of
them.
Use Excel to test whether Steve will like a randomly selected song more
often than not, and then draw a conclusion in the context of the problem.
Use α=0.05.
Reject the null hypothesis. There is sufficient evidence to conclude that Steve will like a
randomly selected song more often than not.
2. A magazine regularly tested products and gave the reviews to its customers. In one of its
reviews, it tested two types of batteries and claimed that the batteries from Company A
outperformed the batteries from Company B. A representative from Company B asked for the
HYPOTHESIS TEST FOR PROPORTIONS
1. Steve listens to his favorite streaming music service when he works out.
He wonders whether the service's algorithm does a good job of finding
random songs that he will like more often than not. To test this, he listens to
50 songs chosen by the service at random and finds that he likes 32 of
them.
Use Excel to test whether Steve will like a randomly selected song more
often than not, and then draw a conclusion in the context of the problem.
Use α=0.05.
Reject the null hypothesis. There is sufficient evidence to conclude that Steve will like a
randomly selected song more often than not.
2. A magazine regularly tested products and gave the reviews to its customers. In one of its
reviews, it tested two types of batteries and claimed that the batteries from Company A
outperformed the batteries from Company B. A representative from Company B asked for the
