Unformatted text preview: ....._;_.. :. MATH 2300   Problems
Express the null hypothesis.
1) Which could be the null hypoth 's for the true proportion of ﬁreﬂies unable to produce light?
A) Ho: 13 at 0.0012 silo: p = 0.0012 C) Ho: p = 0.0012 D) Ho: p < 0.0012 Examine the given statement, then identify whether the statement is a null hypothesis, an alternative hypothesis or
neither.
2) The mean income of workers who have majored in history is less than $25,000.
A) Null hypothesis 5) Neither @Alternative hypothesis 3) The rcentage of viewers tuned to FOX News is equal to 85%.
(93;):qu hypotheSis 3) Neither C) Alternative hypothesis 4) The more college courses a person has, the higher their salary will be.
A) Alternative hypothesis B) Null hypothesis @Neither Determine the null and alternative hypotheses.
5) A manufacturer claims that the mean amount of cola in its 16 ounce bottles is 16.1 ounces. A consumer
advocacy group wants to perform a hypothesis test to determine whether the mean amount is actually less than
M this.
“75 Ho: u == 16.1 ounces 8) Ho: p: 16.1 ounces
Ha: p s 16.1 ounces H3: )1 > 16.1 ounces
C) H0: )1 < 16.1 ounces @110; ,0 =16.1 ounces
Ha: u > 16.1 ounces Ha: p < 16.1 ounces 6) A cereal company claims that the mean weight of it's individual serving boxes is at least 14 oz.
A)H0:u=14 tin{0:11:14 C)H0:p=14 @H0:p=14 E) Ho:u=14
Hazpzlti Ham!” Hams” Hazp<14 Ha:p>14
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7) The owner of a football team claims that the average attendance at games is over 81.000, and he is therefore justified in moving the team to a city with a larger stadium.
A) H0: )1 = 81,000 B) Ho: )1 = 31,000 C) H0: .u = 31,000 @ Ho: )1 = 31,000
Ha: u281,000 Ha: p<81,000 Ha: )1: 81,000 Ha: p> 81,000 Select the most appropriate answer.
8) Which of the following would be an appropriate null hypothesis?
A) The population mean is not equal to 3.4. B) The sample mean is equal to 3.4.
©l'he population mean is equal to 3.4. D) The sample mean is greater than 3.4. 9) Which Pvalue provides the strongest evidence against the null hypothesis?
A) 0.05 s) 0.99 C) 1 D) —0.05 @0001 10) Which of the following statements is false?
A) The P value is betWeen 0 and 1.
B) The Pvalue represents the probability of obtaining the observed value or one even more extreme.
C) The smaller the P—value, the stronger the evidence is against H0. @The Pvalue assumes 11;, is true. ...
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 Spring '08
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