Chapter 9: Q.54 (page 539)
A bottle of water is labeled as containing 16 fluid ounces of water. You believe it is less than that. What type of test would you use?
A left-tailed test will be used.
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A sleeping bag is tested to withstand temperatures of . You think the bag cannot stand temperatures that low. State the Type I and Type II errors in complete sentences.
In words, describe
A medical trial is conducted to test whether or not a new medicine reduces cholesterol by.State the null and alternative hypotheses.
A statistics instructor believes that fewer than of Evergreen Valley College (EVC) students attended the opening
night midnight showing of the latest Harry Potter movie. She surveys of her students and finds that attended the
midnight showing. An appropriate alternative hypothesis is:
Your statistics instructor claims that percent of the students who take her Elementary Statistics class go through life feeling more enriched. For some reason that she can't quite figure out, most people don't believe her. You decide to check this out on your own. You randomly survey of her past Elementary Statistics students and find that feel more enriched as a result of her class. Now, what do you think?
"The Craven," by Mark Salangsang
Once upon a morning dreary
In stats class I was weak and weary.
Pondering over last night’s homework
Whose answers were now on the board
This I did and nothing more.
While I nodded nearly napping
Suddenly, there came a tapping.
As someone gently rapping,
Rapping my head as I snore.
Quoth the teacher, “Sleep no more.”
“In every class you fall asleep,”
The teacher said, his voice was deep.
“So a tally I’ve begun to keep
Of every class you nap and snore.
The percentage being forty-four.”
“My dear teacher I must confess,
While sleeping is what I do best.
The percentage, I think, must be less,
A percentage less than forty-four.”
This I said and nothing more.
“We’ll see,” he said and walked away,
And fifty classes from that day
He counted till the month of May
The classes in which I napped and snored.
The number he found was twenty-four.
At a significance level of ,
Please tell me am I still alive?
Or did my grade just take a dive
Plunging down beneath the floor?
Upon thee I hereby implore.
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