d Do not reject the null hypothesis There is insufficient evidence to conclude

D do not reject the null hypothesis there is

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d) Do not reject the null hypothesis. There is insufficient evidence to conclude that fewer than 15% of residents use public transportation. Identify the correct alternative hypothesis. 14 A state university annual report showed that its retention rate was at 24% and university officials would like to increase this rate. After implementing several new programs during the last two years, the university reevaluated its retention rate. What is the correct alternative hypotheses for a test to determine whether the retention rate has increased during the last two years? a) Ha: p>O.24b) Ha: $0.24c)Ha: p<O.24 Identify the Type I error. 15 A state university annual report showed that its retention rate was at 24% and university officials would like to increase this rate. After implementing several new programs during the last two years, the university reevaluated its retention rate. Identify a Type I error in the context of this hypothesis test. p 2.2k /4/ ; YE4•— . a) The university does not conclude that retention is on the rise since the retention rate can only decrease. b) The university does not conclude that retention rate is increasing, but in fact the retention rate has increased from 24%. c) The university concludes that retention is on the rise since the retention rate can only increase. d) The university concludes that retention rate is increasing, but in fact it has not.
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Identify the correct null and alternative hypotheses. A waste management service attempts to design routes so that each of their trucks pick-up on average four tons of garbage or less. A garbage collector believes, however, that he averages picking up more than four tons of garbage per day and decides to perform a hypothesis test. a) Ho: p = 4 vs. Ha: b) Ho: = 4 vs. Ha: p c) Ho: p = 4 vs. Ha: p IT A waste management service attempts to design routes so that each of their trucks pick-up on average four tons of garbage or less. A garbage collector believes, however, that he averages picking up more than four tons of garbage per day and decides to perform a hypothesis test. Identify a Type Il error in the context of this hypothesis test. be,nj 13 . a) Concluding that the garbage collector picks up on average more than 4 tons of garbage per day when, in fact, he doesn't. b) Not concluding that the garbage collector picks up on average more than 4 tons of garbage per day when, in fact, he does. c) Concluding that the garbage collector picks up on average 4 tons of garbage per day when, in fact, he picks up more. d) Not concluding that the garbage collector picks up on average 4 tons of garbage per day when, in fact, he does. Use the p-value method to conduct Identify the Type error. L..oke.*,.
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the hypothesis test. 18, A waste management service attempts to design routes so that each of their trucks pick-up on average four tons of garbage or less. A garbage collector believes, however, that he averages picking up more than four tons of garbage per day and decides to perform a hypothesis test.
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  • Summer '14
  • Null hypothesis, Statistical hypothesis testing

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