Test the claim that the proportion of people who own cats is smaller than 20% at the 0.025 significance level. The null and alternative hypothesis would be: Ho:u = 0.2 Ho:M = 0.2 Ho :p = 0.2 Ho :p = 0.2 Ho :p = 0.2 Ho:M = 0.2 H1:M 0.2 H1 :p # 0.2 H1:M > 0.2 O O O O O O The test is: right-tailed two-tailed left-tailed O O Based on a sample of 300 people, 13% owned cats The p-value is: to 4 decimal places) Based on this we: Fail to reject the null hypothesis Reject the null hypothesis Question Help: D Post to forum Submit QuestionPast studies have indicated that the percentage of smokers was estimated to be about 35%. Given the new smoking cessation programs that have been implemented, you now believe that the percentage of smokers has reduced. You randomly surveyed 2283 people and found that 749 smoke. Use a 0.05 significance level to test the claim that the percentage of smokers has reduced. a) Identify the null and alternative hypotheses? b What t e of h othesis test should ou conduct left- ri ht- or two-tailed ? o left-tailed A right-tai led A two-tailed J c) Identify the appropriate significance level. d) Calculate your test statistic (Use 33 rounded to 4 decimal places). Write the result below, and round your test statistic to 4 decimal places. D e) Calculate your p-value. Write the result below, rounded to four decimal places. You are concerned that nausea may be a side effect of Tamiflu, but you cannot just give Tamiflu to patients with the flu and say that nausea is a side effect if people become nauseous. This is because nausea is common for people who have the flu. From past studies you know that about 35% of people who get the flu experience nausea. You collected data on 1780 patients who were taking Tamiflu to relieve symtoms of the flu, and found that 678 experienced nausea. Use a 0.01 significance level to test the claim that the percentage of people who take Tamiflu for the relief of flu symtoms and experience nausea is greater than 35%. a) Identify the null and alternative hypotheses? b What t -e of h nothesis test should ou conduct left- ri-ht- or two-tailed ? " left-tai led o right-tai led f? two-tai led c) Identify the appropriate significance level. d) Calculate your test statistic (use 33 rounded to 4 decimal places). Round your test statistic to 4 decimal places. D e) Calculate your p-value and round to 4 decimal places. C] Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31 , 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day. A sample of 63 stocks traded on the NYSE that day showed that 25 went up. You are conducting a study to see if the proportion of stocks that went up is is significantly more than 0.3. You use a significance level of a = 0.10. What is the test statistic for this sample? Use 13 rounded to 4 decimal places. (Report answer accurate to 4 decimal places.) test statistic = C] What is the p-value for this sample? (Report answer accurate to 4 decimal places.) p-value = I: 6.16 Is college worth it? Part I: Among a simple random sample of 331 American adults who do not have a four-year college degree and are not currently enrolled in school, 48% said they decided not to go to college because they could not afford school. (a) A newspaper article states that only a minority of the Americans who decide not to go to college do so because they cannot afford it and uses the point estimate from this survey as evidence. Conduct a hypothesis test to determine if these data provide strong evidence supporting this statement. The hypotheses for this test are: The test statistic is: (please round to two decimal places) The p-value associated with this hypothesis test is: Z] (please round to four decimal places) What is the conclusion of the h -othesis test? C\Based on a sample of 180 people, 145 said they prefer "Trydint" gum to "Eklypse". The point estimate is: :] (to 4 decimal places) The 90 % confidence interval is: :] to :] (to 4 decimal places)
