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value: 1.0!] points Chicken Delight claims that 91% ct its orders are delivered within 1!] minutes of the time the order is pieced. A sample of 90 orders revealed that T5 were delivered wi'1in the promised time. At the 0.10 signicance level, can we conclude that less than 91% oi the orders are delivered in less then 10 minutes? a. What is the decision nile? [Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places] window\": is. Compute the value of the test statistic. [Negative amount should be indicated by a minus sign. Round the intermediate values and nal answer to 2 decimal places] meheeeaac E e. What is your decision regarding the null hypothesis? {Click to select! 3 H0 :11 E 0.91 value: 1.0!] points Research at the University of Toledo indicates that 50% of students change their major area of studyr after their rst year in a program. A random sample of 100 students in the College of Business revealed that 43 had changed their major area of study alter their rst year of the program. Has there been a signicant decrease in the proportion of students who change their major alter the rst year in this program? Test at the .05 level ofsigni-noe. 1ll'ul'hat is the decision mle? [Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.] c H..._c Hewett-5 mm- Compute the value of the test statistic. [Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places} Unofhehstntosc 1ll'ul'hat is your decision regarding Hg? 0 Reject 0 Cannot reject value: 1.00 points The Damon family owns a large grape vineyard in westem New York along Lake Erie. The grapevines must be sprayed at the beginning of the growing season to protect against various insects and diseases. Two new insecticides have just been marketed: Pernod 5 and Action. To test their effectivenessl three long rows were selected and sprayed with Pernod 5, and three others were sprayed with Action. When the grapes ripened, 400 of the vines treated with Pernod 5 were checked for infestation. Likewise. a sample of 400 vines sprayed with Action were checked. The results are: Hulda-er of Vines Checked Number of Ineeclilide {maple size} Infested \"nee Pemod 5 400 30 Action 400 3? At the .01 signicance levelI can we conclude that there is a difference in the proportion of vines infested using Pemcd 5 as opposed to Action? Hint: For the calculations, assume the Pernod as the rst sample. 1. State the decision mle. [Negative amounts should be indicated by a minus sign. Do not round the intermediate values. Round your answers to 2 decimal places.) Hum-M Compute the pooled proportion. [Do not round the intermediate values. Round your answer to 3 decimal places.) Paula-t Prop-n" 2. Compute the value of the test statistic. (Negative amount should be indicated by a minus sign. Do not round the intermediate values. Round your answer to 2 decimal places.) mmhmmac 3. What is your decision regarding the null hypothesis? [incision 0 value: 1.0!] points The National Basketball Association had 39 African-American top executives [presidents or vice presidents} among its 3-33 senior managers. iltl'teenllvhileI Major League Baseball had only 11 African Americans among its 30? top administrators. Test at the 115 signicance level if this reveals the NBA has signi-ny more Amnmnmn participation in higher levels of management. State the null and alternate hypotheses. \"a: "MBA "ma H1: "NBA "MLe Make the decision nJIe. [Round your answers to 3 decimal places.) H\" is rejected if z =- |:|. Evaluate the test statistic. [Round your answer to 3 decimal places.) mumm- - E What is the decision regarding the null hypothesis? snmanau-anmnwmm participation. value: 1.00 points Each month the National Association of Purchasing Managers surveys purchasing managem and publishes the NAPM index. One of the questions asked on the survey is: Do you think the economy is contracting? Last month, of the 300 responding managers, 160 answered yes to the question. This month, 1m of the 290 managers indicated they felt the economy was contracting. At the .05 signicance level. can we conclude that a larger proportion of the purchasing managers believe the economy is contracting this month? State the null and altemate hypotheses. mamas: month enema"ms month Make the decision rule. [Negative amounts should be indicated by a minus sign. Round your answer to 3 decimal places] enema\" :i Evaluate the test statistic. (Negative amounts should be Indicated by a minus sign. Round your answer to 2 decimal places.) mm - :| What is the decision regarding the null hypothesis? HI, ial [click to select] a. We [Click to select} a col-dude m incrmaed proportion beieve he may in wheeling this rrnnl'l