1 answer

Please help with this problem 12. Identify an appropriate test for each of the following situations: (a) A random sample

Question:

Please help with this problem
12. Identify an appropriate test for each of the following situations: (a) A random sample of workers is taken from each of 3
12. Identify an appropriate test for each of the following situations: (a) A random sample of workers is taken from each of 3 factories and the number of overdme hours (b) A chemist is evaluating a new method for determining the percentage content of an element in a (c) Researchers collected intelligence test scores on twins, one of whom was raised by the natural (d) Two methods for determining the percentage of iron in ore samples were compared by splitting each (e) In a famous experiment to assess the efficiency of aspirin in preventing heart attacks, 22,000 healthy worked for each worker is recorded. The purpose of the study is to examine the relationship between factory and hours of overtime worked. sample. She obtains a specimen of known content and makes 10 measurements of the percentage content of the element. She wants to compare her measurements to the known content parents and one of whom was raised by foster parents. They are interested in knowing whether there is an advantage in resulting intelligence scores for children raised by their natural parents. of 87 ore samples into two parts. One part was then measured using method 1, and the other part was measured using method 2. middle-aged men were divided into two equal groups, one of which was given a daily dose of aspirin and one of which was given a placebo that looked and tasted identical to the aspirin. At the time that the experiment was halted, numbers of members in each group who had heart attacks are recorded. (f) A telephone company is trying to decide whether some new lines in a large community should be installed underground. Because a small surcharge will be added to telephone bills to pay for the extra installation costs, the company has decided to survey customers and proceed only if the survey strongly indicates that more than 60% of all customers favor underground installation.

Answers

12)a)ANOVA. There are actually three groups( factories) of overtimes and the hypothesis of interest (null hypothesis) is the mean overtimes are equal for all the three groups against the alternative that atleast one factory has a significant mean overtime. And if the null hypothesis is rejected we do a post hoc test to test which group means are significant

b)One sample t test would be appropriate where the known content is taken as the population mean and the average sample measurements is the sample mean

c) Since the twins share some common charateristics, the samples are not independent. Since there was no mentioning regarding the population or the sample size application of paired t test can not be justified. so a non parametric alternative such as Wilcoxon paired signed rank test and the paired sign test.

May be appropriate here.

d) A two sample t test would be appropriate to test whether the measurement by the two methods differ significantly.

e) chi-square test for independence or association can be used to test whether the placebo group is more likely to develop heart attacks.

f)One sample proportion test is the most appropriate test where the alternative is a one tailed hypothesis ie Hi p> 60

Please comment in case if you need more explanation.

.

Similar Solved Questions

1 answer
How do you solve x-2y=-25 and 3x-y=0?
How do you solve x-2y=-25 and 3x-y=0?...
1 answer
1)2) 3) Required information The following information applies to the questions displayed below. The following financial...
1)2) 3) Required information The following information applies to the questions displayed below. The following financial statements and additional information are reported IKIBAN INC Comparative Balance Sheets June 30, 2017 and 2016 2017 2016 Assets Cash Accounts receivable, net Inventory Prepaid ...
1 answer
Determine the tension in the cable. Express your answer to three significant figures and include the...
Determine the tension in the cable. Express your answer to three significant figures and include the appropriate units. The smooth uniform rod AB is supported by a ball-and-socket joint at A, the wall at B, and cable BC. The rod has a mass of 18 kg (Figure 1) | The | Value | Units Submit P X Incorre...
1 answer
In java Part 1 In this section, we relook at the main method by examining passing...
in java Part 1 In this section, we relook at the main method by examining passing array as parameters. Often we include options/flags when running programs. On command line, for example, we may do “java MyProgram -a -v". Depending on options, the program may do things differently. For...
1 answer
QUESTION 10 Selected accounts with amounts omitted are as follows Work in Process 275,000 Aug. 31...
QUESTION 10 Selected accounts with amounts omitted are as follows Work in Process 275,000 Aug. 31 Goods finished 1,030,000 Aug. 1 Balance 31 Direct materials 31 Direct labor 31 Factory overhead 450,000 Factory Overhead Aug. 1- Costs incurred 145,000 Aug. 1 Balance 31 31 Applied (30% of direct labor ...
1 answer
DSP Lab Exercise 9 Given below are the Impulse Response h(n), of the four main types of FIR Digit...
DSP Lab Exercise 9 Given below are the Impulse Response h(n), of the four main types of FIR Digital filters. Use appropriate MATLAB expressions to find: a) System Response (H(z) b) Pole-zero diagram c) Amplitude Response d) Phase Response 1. FIR Low-Pass Digital Filter ,n= 0.1 |[d(n) + δ(n-I))...
1 answer
4. The following transactions relate to Smith Electronics Ltd, which commenced business on 1 December 2017....
4. The following transactions relate to Smith Electronics Ltd, which commenced business on 1 December 2017. Dec.1 Capital invested 3 Purchased equipment 5 Purchased fixtures 6 Purchased stock 9 Cash sales 12 Paid wages 15 Purchased stock 18 Purchased stationery 21 Cash Sales 24 Paid motor expenses 2...
1 answer
1. We talked a lot about asset bubbles and financial crisis in various markets around the...
1. We talked a lot about asset bubbles and financial crisis in various markets around the world. You’ve been hired as a Capital Markets Consultant by an emerging market government to advice them on how to temper their these boom/bust cycles. Do you have any ideas? Or is it a losing battle (I&r...
1 answer
Calculate the selected company’s free cash flows (FCF) THE COCA-COLA COMPANY AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF...
Calculate the selected company’s free cash flows (FCF) THE COCA-COLA COMPANY AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF CASH FLOWS (In millions) 2019 2018 2017 $ $ 8,985 $ 1,365 201 (280) (421) 91 (467) 127 Year Ended December 31, Operating Activities Consolidated net income Depreciation and...
1 answer
Please answer a-j Y anaga Class time: П. Process Costing (50 points) Our company manufactures Chemical...
please answer a-j Y anaga Class time: П. Process Costing (50 points) Our company manufactures Chemical X, Assume the company uses weighted average. Separate direct materials and conversion costs Chemical X is comprised of two ingredients, A and B. A is added at the beginning of the process...
1 answer
8. Abandonment options Galbraith Co. is considering a four-year project that will require an initial investment...
8. Abandonment options Galbraith Co. is considering a four-year project that will require an initial investment of $5,000. The base-case cash flows for this project are projected to be $14,000 per year. The best-case cash flows are projected to be $26,000 per year, and the worst-case cash flows are ...
1 answer
Inspection costs at one of Ratulowski Corporation's factories are listed below: April May June July August...
Inspection costs at one of Ratulowski Corporation's factories are listed below: April May June July August September October November December Units Produced 924 987 930 914 936 921 938 878 917 Inspection Costs $18, 112 $18,500 $18,165 $18,010 $18, 194 $18,080 $18, 232 $17,470 $18,038 Management...
1 answer
Why the FID is considered a carbon counter?
Why the FID is considered a carbon counter?...
1 answer
If a producer wants to increase revenue and knows that the good it is selling is...
If a producer wants to increase revenue and knows that the good it is selling is an inelastic good, which of the following should it do? Select one: a. increase price of the good b. decrease price of the good c. keep the price the same d. need more information to answer the question...
1 answer
8. Completely factor the expression y +12y 35. A.(y-2)(y-5) C B. Prime
8. Completely factor the expression y +12y 35. A.(y-2)(y-5) C B. Prime...
1 answer
How do you write #7241# in scientific notation?
How do you write #7241# in scientific notation?...