If the p-value is less than or equal to a,we reject the alternative hypothesis (p ≤ a) answer
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- A test is made of the hypotheses Ho: μ≤ 12 versus H₁ : µ> 12. For each of the following situations, determine whether the decision was correct, a type I error occurred, or a type II error occurred. a. μ = 10, Ho is rejected. b. μ = 12, Ho is not rejected. c. μ = 14, Ho is not rejected. d. μ = 16, Ho is rejected.A member of the Coker eSports team claims that a good gaming computer costs at least $990. a. State the null and alternative hypothesis for the claim that a good gaming computer costs at least $990. Ho: μ ≥ 990 Ha: μ 990 Ha: 990 Ho: H≤ 990 Ha: > 990 Ho: μ = 990 Ha: μ # 990 Ho: μ # 990 Ha: μ = 990 Ηο: μ < 990 H₂: μ ≥ 990 b. The hypothesis is the claim. c. The goal of the test is to the claim.Two new accessions of pepper were tested for pungency. The two accessions were given to ten persons who scored the pepper samples as 1 if it is the more pungent of the two and 0 , otherwise. Which test can be conducted to compare pungency of the two new accessions? a. F-test B. Friedman C. t-test D. sign test
- The average life expectancy of tires produced by the Dunlop Tire Company has been 40,000 miles. Management believes that due to a new production process, the life expectancy of their tires has increased. In order to test the validity of their belief, the correct set of hypotheses is O a. Ho: H > 40,000 Ha:H S 40,000 O b. Ho:H 2 40,000 HaiH 40,000 O d. Ho: H <40,000 H3:H 2 40,000Let’s assume the average income for all majors in the School of Engineering is $80,000. However, the chair of the Computer Science department thinks their students earn more than that. Please choose the appropriate null and alternative hypotheses if the chair wanted to test this belief. a. H0: u <=80,000 Ha: u > 80,000 b. H0: u= 80000 Ha: u not= 80000 c. H0: u >80000 Ha: u < 80000 d. H0: u >80000 Ha: < 80000 e. None of the above.The proportion of the population in favor of a particular law was about 66%. It is believed that the current proportion of the population in favor of the law has decreased. To assess this, you collect a sample of n=340 people and 197 indicate being in favor of the law. We wish to test the claim that the proportion of the population in favor of the law has decreased. Symbolically, the claim would be expressed as the alternative hypothesis: Ha:p
- A company manufacturing CDs is working on a new technology. A random sample of 717 Internet users were asked "As you may know, some CDs are being manufactured so that you can only make one copy of the CD after you purchase it. Would you buy a CD with this technology, or would you refuse to buy it even ifit was one you would normaly buy?" Of hose usert, 56% responded that they would buy the CD. Complete parts a and b below a) Create a 90% confidence interval for this percentage 口口 (Round to three decimal places as needed, Use ascending order.)Meth Barie's ice cream shop wants to decide whether to introduce a new ice cream flavor. They randomly selected 15 customers at their downtown Denton location to rate this new flavor. The rating is on a scale of 1 to 5, with 1 being 'not interested' and 5 being 'strongly interested'. Meth Barie's will approve the new flavor if the true mean rating is over 4.0. What is the Null hypothesis for testing whether the new ice cream should be approved?For the following hypothesis test: HO: m ≤ 14 HA: m >14 a: 0.01 with n = 38, o = 9, and x = 16, which of the following is TRUE? Select one: a. reject null hypothesis and conclude that the mean is equal to or less than 14 O b. fail to reject null hypothesis and conclude that the mean is equal to or less than 14 c. reject null hypothesis and conclude that the mean is greater than 14 d. fail to reject null hypothesis and conclude that the is greater than 14
- An education researcher claims that at most 7% of working college students are employed as teachers a= 0.01, is there enough evidence to reject the researcher's claim? Complete parts (a) through (e) below. r teaching assistants. In a random sample of 500 working college students, 9% are employed as teachers or teaching assistants. At (a) Identify the claim and state H, and H Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) A. At most 7 % of working college students are employed as teachers or teaching assistants. O B. % of working college students are employed as teachers or teaching assistants. O C. The percentage of working college students who are employed as teachers or teaching assistants is not %. O D. More than % of working college students are employed as teachers or teaching assistants. Let p be the population proportion of successes, where a success is a…(e) Interpret the decision in the context of the original claim. Does it appear that peanut candies have weights that vary more than those of plain candies? O A. Since the null hypothesis is rejected, the weights appear to vary more for peanut candies. OC. Since the null hypothesis is not rejected, the weights appear to vary more for peanut candies. O B. Since the null hypothesis is not rejected, the weights do not appear to vary more for peanut candies. O D. Since the null hypothesis is rejected, the weights do not appear to vary more for peanut candies.A student wishes to see if at her work place the proportion females who do not have children is less than the proportion of males who do not have children. To test her claim she randomly selects 358 females 60 did not have children. She then randomly selects 322 males workers and out of them 59 did not have children. Test her claim at œ=0.05 to see if she was right. The correct hypotheses are: О Но: рr рм(claim) Ο H: pF PM НА: PF < рм (claim) O Ho:PF На: рr + рм (claim) = PM Since the level of significance is 0.10 the critical value is -1.282 The test statistic is: (round to 3 places) The p-value is: (round to 3 places) The decision can be made to: O reject Ho O do not reject Ho