STOP AND READ THIS PART!! - please DO NOT answer the full question. PLEASE just explain...

STOP AND READ THIS PART!! - please DO NOT answer the full question. PLEASE just explain why you would use the "pooled variances" over the method that uses degrees of freedom. please explain the differences and when you would use one over the other

READ ABOVE^^ -- A cigarette manufacturer is experimenting with two new filters for its cigarettes. Filter I is cheaper to make than Filter II and will be used unless there is statistical evidence that Filter II is more effective than Filter I. To compare the two filters, 25 cigarettes were made using each type of filter. The cigarettes were mechanically smoked and the amount (in milligrams) of trapped tar and nicotine recorded with the following results:

	Filter I	Filter II
Mean	1.10	1.13
Variance	.05	.07

Assume the amounts of trapped tar and nicotine for cigarettes made with both filters are normally distributed with common variances. At a 5% significance level, which filter do you think the manufacturer should choose?

Solutions

Expert Solution

we should conduct the test for variance are equal or not

orchestra answered 1 year ago

Next > < Previous

Related Solutions

PLEASE READ: This is one question with 3 parts to it, please answer the full question....

PLEASE READ: This is one question with 3 parts to it, please answer the full question. Mark M. Upp has just been fired as the university bookstore manager for setting prices too low (only 20 percent above suggest retail). He is considering opening a competing bookstore near the campus, and he has begun an analysis of the situation. There are two possible sites under consideration. One is relatively small, while the other is large. If he opens at Site 1...

I need a full answer ...not a part.. please and you don't have to explain just...

I need a full answer ...not a part.. please and you don't have to explain just give me a answer plesase.. question 1 . Match the following, each choice is used once. 1. Levering System a. long or irregular bones b. synovial joint c. how things move d. muscle power e .object to be moved 2. Pivot (Fulcrum) a. long or irregular bones b. synovial joint c. how things move d. muscle power e .object to be moved 3. Effort...

Please walk me through SPSS to answer this question, NOT just answer it but please show...

Please walk me through SPSS to answer this question, NOT just answer it but please show me how you did it on SPSS... Consider the data below of inches of rainfall per month for two different regions in the Northwestern United States: Plains Mountains April 25.2 13.0 May 17.1 18.1 June 18.9 15.7 July 17.3 11.3 August 16.5 14.0 Using SPSS, perform a two-sample t-test for the hypothesis that there is not the same amount of rainfall in both...

Please answer all question. If you can't answer all question then don't answer just one question....

Please answer all question. If you can't answer all question then don't answer just one question. I need all and I'm having test. 12. You have started an investment club with your friend. You identified an account which you think will pay 8% per year. You are going to invest $1200 per year. Your friend is going to invest $100 per month. You plan to invest for 4 years. All else equal, which of the following is true. 13. Annuity...

Please do not just give the answer. Please also explain how you got them. Thanks! 1....

Please do not just give the answer. Please also explain how you got them. Thanks! 1. Which of the following is not a valid method of applying LCNRV: A. logical categories of inventory (i.e. product line) B. the entire inventory C. inventory items to be sold within the next year D. individual inventory items E. None of the answer choices are correct 2. Which of the following would not require the company to account for the change retrospectively? A. From...

Please answer part a) through part d) of the question below. Thank you. Question 3 A...

Please answer part a) through part d) of the question below. Thank you. Question 3 A tobacco refinery has four methods of measuring pH. To test the four methods, a supervisor randomly assigns each of 32 tobacco samples with known pH to one of the four methods, so that each method is applied to exactly eight samples. The difference between measured pH and the known pH is recorded, and the data is below. Method Sample Response A 1 -0.307 A...

Its a single question so need full answer for each sub part. the overall answer should...

Its a single question so need full answer for each sub part. the overall answer should be between 200 and 300 words. Upvote will be given for correct answer. 1. Summarise the effect of a tariff and the effect of a quota based on the following questions: i) Does the importing country gain or lose overall from implementing a tariff or a quota? ii) Do the following groups in the importing country gain or lose from a tariff or a...

Can you please tell me just the right answer for each question. Do not need explanation....

Can you please tell me just the right answer for each question. Do not need explanation. Thank you! QUESTION 1 The ____ strategies assume that people are rational and follow their own self-interest. ? Empirical-rational? Normative re-educative Power-coercive? Normative-educative 10 points QUESTION 2 In the ____ change outcomes image, some, but not all, change intentions are achievable. Intended? Partially intended? Unintended? Partially unintended 10 points QUESTION 3 The ____ image is based on an image of management as...

Can you please write at least a full page analysis and answer every part of the...

Can you please write at least a full page analysis and answer every part of the question. Mary went for a consultation about a surgical procedure. When Robert met with her, he wore a name tag that identified him as a doctor and was addressed as “doctor” by the nurse. Robert then examined Marty, touching her stomach and showing her where the incision would be made. Robert was not a doctor, he was the office manager. Although the doctor actually...

IN YOUR OWN WORDS-PEASE DO NOT COPY AND PASTE ) PLEASE READ-->DO NOT ANSWER QUESTIONS__> Please...

IN YOUR OWN WORDS-PEASE DO NOT COPY AND PASTE ) PLEASE READ-->DO NOT ANSWER QUESTIONS__> Please determine in each questions wether it is biased and which is unbiased for both A & B. How their examples do or do not create a bias. 1) A) Do you think obesity is the cause of cardiovascular diseases (CVD)? B) Why people don’t lose weight to decrease risk factors for cardiovascular diseases (CVD)? 2 A) Do you think High Blood Pressure is caused...

Subjects