Chapter 11: Q. 49 (page 657)
State the decision and conclusion (in a complete sentence) for the following preconceived levels of \(\alpha\).
\(df=\)___
Short Answer
The degree of freedom \(df\) is \(4\).
Chapter 11: Q. 49 (page 657)
State the decision and conclusion (in a complete sentence) for the following preconceived levels of \(\alpha\).
\(df=\)___
The degree of freedom \(df\) is \(4\).
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Get started for freeConsumers may be interested in whether the cost of a particular calculator varies from store to store. Based on surveying stores, which yielded a sample mean of and a sample standard deviation of , test the claim that the standard deviation is greater than .
The manager of "Frenchies" is concerned that patrons are not consistently receiving the same amount of French fries with each order. The chef claims that the standard deviation for a ten-ounce order of fries is at most oz., but the manager thinks that it may be higher. He randomly weighs orders of fries, which yields a mean of oz. and a standard deviation of two oz.
A six-sided die is rolled times. Fill in the expected frequency column. Then, conduct a hypothesis test to determine if the die is fair. The data in Table are the result of the rolls.
Face Value | Frequency | Expected Frequency |
1 | 15 | |
2 | 29 | |
3 | 16 | |
4 | 15 | |
5 | 30 | |
6 | 15 |
= ________
A market researcher wants to see if two different stores have the same distribution of sales throughout the year. What type of test should he use?
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