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Cash to find work? (4.2) Will cash bonuses speed the return to work of unemployed people? The Illinois Department of Employment Security designed an experiment to find out. The subjects were 10,065 people aged 20 to 54 who were filing claims for unemployment insurance. Some were offered \(500 if they found a job within 11 weeks and held it for at least 4 months. Others could tell potential employers that the state would pay the employer \)500 for hiring them. A control group got neither kind of bonus.15

a. Describe a completely randomized design for this experiment.

b. Explain how you would use a random number generator to assign the treatments.

c. What is the purpose of the control group in this setting?

Short Answer

Expert verified

Part a) A completely randomized design is:

Part b) The treatments are assigned a random number generator, which is listed as:

The subject 1;5364is selected for treatment 1

The subject 2;5668is selected for treatment 1

The subject 3;1261is selected for treatment 1

Step by step solution

01

Part a) Step 1: The objective is to determine a completely randomized design for the given experiment is to be described.

A completely randomized design is a statistical term that describes the simplest experimental design in terms of convenience and analysis.

The treatments are assigned at random from the subject using this design. So, a completely randomized design for the subject of 10065 people aged 20-54who filed an unemployment insurance claim is:

Therefore, a completely randomized design is well described above.

02

Part b) Step 1: Given information

Number of subjects10065

03

Part b) Step 2: The objective is to determine a random number generator for the treatments assign is to be explained. 

Each subject must be assigned a unique integer number from the 1-10065number system. To select the first three subjects for the treatments, select the line 137from table B:

5364566812612414783612609153739848114592

Check each consecutive number of four consecutive numbers here. If the first digit is one1,it corresponds to a subject.

If the number corresponds to a subject, you should select that subject:

The subject 1;5364is selected for treatment 1

The subject 2;5668is selected for treatment 1

The subject 3;1261is selected for treatment 1

Therefore, the random number generator is well described above.

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Most popular questions from this chapter

pg559ยฏ

No homework Refer to Exercises 1 and 9. What conclusion would you make at theฮฑ=0.05ฮฑ=0.05level?

Potato power problems Refer to Exercises 85 and 87

a. Explain one disadvantage of using ฮฑ=0.10 instead of ฮฑ=0.05 when

performing the test.

b. Explain one disadvantage of taking a random sample of 500 potatoes instead of 250 potatoes from the shipment.

Candy! A machine is supposed to fill bags with an average of 19.2 ounces of candy. The manager of the candy factory wants to be sure that the machine does not consistently underfill or overfill the bags. So the manager plans to conduct a significance test at the ฮฑ=0.10significance level of

H0:ฮผ=19.2Ha:ฮผnotequalto19.2

where ฮผ=the true mean amount of candy (in ounces) that the machine put in all bags filled that day. The manager takes a random sample of 75 bags of candy produced that day and weighs each bag. Check if the conditions for performing the test are met.

Making conclusions A student performs a test of H0:ฮผ=12versus Ha:ฮผโ‰ 12

at the ฮฑ=0.05significance level and gets a P-value of 0.01. The

student writes: โ€œBecause the P-value is small, we reject H0. The data prove that Hais true.โ€ Explain what is wrong with this conclusion.

Restaurant power Refer to Exercise 86 Determine if each of the following changes would increase or decrease the power of the test. Explain your answers.

a. Use a random sample of 30 people instead of 50 people.

b. Try to detect that ฮผ=\(85,500 instead of ฮผ=\)86,000

c. Change the significance level to ฮฑ=0.10

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