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A college entrance exam company determined that a score of 21 on the mathematics portion of the roam suggests that a student is mady to college level mathematics To achieve this out students take a core curriculum of math courses in high school Suppose a random sample of 250 students who completed this core set of courses results in a m standard deviation of 3.5 Do these results suggest that students who complete the core curriculum am meady for college level mathematics? That is, are they searing shove 21 parts a) through d) below Click the icon to view the table of critical values (a) State the appropriate null and alternative hypotheses Fill in the comect answers below The appropriate null and alternative hypotheses are H versus H, (Type integers or decimals. Do not round) (b) Verify that the requirements to perform the best using the t-distribution are satisfied Select all that apply A. The sample size is larger than 30 B. The students were randomly sampled C. The students' test scores were independent of one another. D. The sample data come from a population that is approximately normal E. A boxplot of the sample data shows no outliers F. None of the requirements are satisfied. (c) Use the P-value approach at the a 0.05 level of significance to test the hypotheses in part (a) Kokonaid, the fanta Tast: 50 po This question points poste CID company Submit test man with Corgiste
in a survey, 45% of the respondents stated that they talk to the pets on the telephone A veterinarian bleved this result to be too high, so be randenly selected 150 pet owners and discovered that 75 of them spoke to the on the telephone Does the voterinarian have a right to be skeptical? Use the 0.05 level of significance Because no (1-P) 10, the sample size is (Round to one decimal place as needed) What are the null and alternative hypotheses? CARD 5% of the population size, and the sample the requirements for testing the bypo H₂ ▼ versus H, (Type integers or decimals. Do not round) Find the test statistic, Zo(Round to two decimal places as needed.) Find the P-value P-value- (Round to three decimal places as needed.) Does the veterinarian have a right to be skeptical? OA. The veterinarian does not have a right to be skeptical. There is not sufficient evidence to conclude that the true proportion of pet owners who talk to their pets on the telephone is less than 45% OB. The veterinarian has a right to be skeptical. There is sufficient evidence to conclude that the true proportion of pet owners who talk to their pets on the telephone is not 45% OC. The veterinarian does not have a right to be skeptical There is not sufficient evidence to conclude that the true proportion of pet owners who talk to their pots on the telephone in 45% ded Time Remaining: 2632
OA. The veterinarian does not have a right to be skeptical There is not sufficient evidence to conclude that the true proportion of pet owners who talk to their pets on the telephone is less than 45% OB. The veterinarian has a right to be skeptical There is sufficient evidence to conclude that the true proportion of pet owners who talk to their pots on the 1 OC. The veterinarian does not have a right to be skeptical There is not sufficient evidence to conclude that the true proportion of pet owners who talk to their pets on the telephone is 45% lephone is not 45% OD. The veterinarian has a right to be skeptical. There is sufficient evidence to conclude that the true proportion of pet owners who tak their pets on the telephone is less than 45%
Because npe (1-P) (Round to one decimal place What are the null and altem 10, the sample size is ? versus H Ho (Type integers or decimals Find the test statistic, 26= (Round to two deck Find the P-value P-value (Round to three decimal places as needed) needed) CO 5% of the population size, and the sample ents tending the hypothes sched
Because npo (1-Po)= (Round to one decimal place as needed.) What are the null and alternative hypotheses? 10, the sample size is Ho versus H₁: (Type integers or decimals. Do not round. Find the test statistic, Zo Zo= (Round to two decimal places as needed.) 5% of the population size, and the sample less than greater than
and the sample the requirements for testing the hypothesis is given to be random, is given to not be random, cannot be reasonably assumed to be random, can be reasonably assumed to be random,
the requirements for testing the hypothesis satisfied are not are