STAT TECH IN BUSINESS & ECON AC
18th Edition
ISBN: 9781264731657
Author: Lind
Publisher: MCG
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Textbook Question
Chapter 10, Problem 5E
For Exercises 5–8: (a) State the null hypothesis and the alternate hypothesis. (b) State the decision rule. (c) Compute the value of the test statistic. (d) What is your decision regarding H0? (e) What is the p-value? Interpret it.
5. The manufacturer of the X-15 steel-belted radial truck tire claims that the mean mileage the tire can be driven before the tread wears out is 60,000 miles. Assume the mileage wear follows the
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X= 17, M = 21, 0 = 9 and N = 16, conduct a two-tailed z-test. Use a = 05.
A study done in 1997 showed that 4.2% of mothers smoked cigarettes during their pregnancy. An obstetrician feels that this
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Write your answer in the following form P-Value, Conclusion
Example: 0.15, There is not sufficient evidence that the mean weight of pandas is less than 200 pounds.
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C. Find the test statistic, z0
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Chapter 10 Solutions
STAT TECH IN BUSINESS & ECON AC
Ch. 10 - Heinz, a manufacturer of ketchup, uses a...Ch. 10 - Prob. 2SRCh. 10 - For Exercises 14, answer the questions: (a) Is...Ch. 10 - Prob. 2ECh. 10 - Prob. 3ECh. 10 - For Exercises 14, answer the questions: (a) Is...Ch. 10 - For Exercises 58: (a) State the null hypothesis...Ch. 10 - For Exercises 58: (a) State the null hypothesis...Ch. 10 - For Exercises 58: (a) State the null hypothesis...Ch. 10 - For Exercises 58: (a) State the null hypothesis...
Ch. 10 - The mean life of a battery used in a digital clock...Ch. 10 - Given the following hypotheses: H0:10H1:10 A...Ch. 10 - Given the following hypotheses: H0:=400H1:400 A...Ch. 10 - The Rocky Mountain district sales manager of Rath...Ch. 10 - Prob. 12ECh. 10 - Prob. 13ECh. 10 - Most air travelers now use e-tickets. Electronic...Ch. 10 - Prob. 4SRCh. 10 - Given the following hypotheses: H0:20H1:20 A...Ch. 10 - Given the following hypotheses: H0:=100H1:100 A...Ch. 10 - The amount of water consumed each day by a healthy...Ch. 10 - The liquid chlorine added to swimming pools to...Ch. 10 - A Washington, D.C., think tank announces the...Ch. 10 - Hugger Polls contends that an agent conducts a...Ch. 10 - Prob. 5SRCh. 10 - Refer to Table 104 and the example just completed....Ch. 10 - Prob. 22ECh. 10 - Prob. 23ECh. 10 - Prob. 24ECh. 10 - According to the local union president, the mean...Ch. 10 - Rutter Nursery Company packages its pine bark...Ch. 10 - A new weight-watching company, Weight Reducers...Ch. 10 - Dole Pineapple Inc. is concerned that the 16-ounce...Ch. 10 - According to a recent survey, Americans get a mean...Ch. 10 - A statewide real estate sales agency, Farm...Ch. 10 - According to the Census Bureau, 3.13 people reside...Ch. 10 - A recent article in Vitality magazine reported...Ch. 10 - Prob. 33CECh. 10 - Prob. 34CECh. 10 - A recent study revealed the typical American...Ch. 10 - The postanesthesia care area (recovery room) at...Ch. 10 - www.golfsmith.com receives an average of 6.5...Ch. 10 - During recent seasons, Major League Baseball has...Ch. 10 - Watch Corporation of Switzerland claims that its...Ch. 10 - Listed below is the annual rate of return...Ch. 10 - Many grocery stores and large retailers such as...Ch. 10 - For a recent year, the mean fare to fly from...Ch. 10 - The publisher of Celebrity Living claims that the...Ch. 10 - A United Nations report shows the mean family...Ch. 10 - Prob. 45CECh. 10 - The American Water Works Association reports that...Ch. 10 - A cola-dispensing machine is set to dispense 9.00...Ch. 10 - The owners of the Westfield Mall wished to study...Ch. 10 - The following null and alternate hypotheses are...Ch. 10 - An insurance company, based on past experience,...Ch. 10 - A national grocers magazine reports the typical...Ch. 10 - Prob. 52DACh. 10 - Prob. 53DACh. 10 - Refer to the Lincolnville School District bus...
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- A study done in 1997 showed that 4.7% of mothers smoked cigarettes during their pregnancy. An obstetrician feels that this percentage is higher now. To test this, the obstetrician takes a sample of 150 mothers and finds that 9 of them smoked during their pregnancy. Test the obstetrician's claim at the a=0.05 level of significance. Write your answer in the following form P-Value, Conclusion Example: 0.15, There is not sufficient evidence that the mean weight of pandas is less than 200 pounds. Edit View Insert Format Tools Table 12pt Paragraph v BIU Av2v T2く v E v Pv ...arrow_forwardAnswer all sub parts otherwise I will dislikearrow_forwardState whether the standardized test statistic t indicates that you should reject the null hypothesis. Explain. (a) t= 2.242 (b) t = 0 (c) t= 2.195 (d) t= - 2.254 %3D -2219 (a) For t 2.242, should you reject or fail to reject the null hypothesis? O A. Reject Ho, because t>2.219. O B. Reject Ho, because t 2.219. O D. Fail to reject Ho, because t<2.219.arrow_forward
- Help me fast with detail explanation. Definitely I will give Upvote.arrow_forward04-A random sample of 99 heads of households was taken from the customer list for State Bank and Trust. Those samples were asked to classify their own attitudes and their parents' attitudes toward borrowing money. State the hypothesis that the respondents borrowing habits are independent from what they believe their parents atitudes to be. Let a-0.05. Also interpret the results.arrow_forwardI don't know the answer of No.2arrow_forward
- A researcher conducts a hypothesis test using a sample of n=20 with M - 34 and s- 36 from an unknown population. What is the df value for the t statistic? Of- 19 O df - 35 O df= 21 df-37arrow_forwardThe following table contains the number of successes and failures for three categories of a variable. Test whether the proportions are equal for each category at the x = 0.01 level of significance. Category 1 Category 2 Category 3 Failures 39 83 47 Successes 30 65 38 Click the icon to view the Chi-Square table of critical values. State the hypotheses. Choose the correct answer below. OA. Ho: The categories of the variable and success and failure are independent. H₁: The categories of the variable and success and failure are dependent. OB. Ho: The categories of the variable and success and failure are dependent. H₁: The categories of the variable and success and failure are independent. C. Ho: P1 P2 P3 H₁: At least one of the proportions is different from the others. OD. Ho: H₁=E₁ and μ₂ = E₂ and μ3 = E3 H₁: At least one mean is different from what is expected. Compute the value of the chi-square test statistic. xo (Round to three decimal places as needed.)arrow_forward1arrow_forward
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