Question: A pilot study was designed to evaluate the potential efficacy of a program designed to reduce prison recidivism amongst inmates who have a documented long-term

A pilot study was designed to evaluate the potential efficacy of a program designed to reduce prison recidivism amongst inmates who have a documented long-term history of drug and/or alcohol problems. A sample of 11 prisoners was followed for up to 24 months after their most recent release from prison. Six of the inmates returned to prison at 3, 7 9, 11, 14 and 21 months respectively. Five of the inmates had not returned to prison as of the last time they were last contacted which was at 4, 8, 16, 24, and 24 months respectively.

Use the Kaplan Meier approach to estimate the survival curve for this set of inmates (which tracks the proportion who have not yet returned to prison over time). It will be helpful to construct a table like the ones appearing in lecture 5: however, all you will need to report in the quiz generator are certain quantities from this table for specific times.

- Suppose you treated the censored observations as events: what would your estimate for S(11) be?

a. 45%

b. 83%

c. 33%

d. 57%

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

29. In an August 2013 article published in American Journal of Public Health, researchers report the results of a two-site (San Francisco and NYC) randomized trial: here is a description of the trial...

1. (This begins exercise 2, which spans questions 1- 8) A pilot study was designed to evaluate the potential efficacy of a program designed to reduce prison recidivism amongst inmates who have a...

At DEF Insurance Company, agents are employees of the company who are paid a salary plus commissions. This is an example of what type of insurance marketing system? OA) Fraternal B) Direct response...

What are the main determinants of capital structure?

Bioware Co. reports cost of goods sold of $42,000. Its comparative balance sheet shows that inventory decreased $7,000 and accounts payable increased $5,000. Compute cash payments to suppliers using...

6.11 Find the following percentiles for the standard normal random variable z: a. 90th percentile c. 98th percentile b. 95th percentile d. 99th percentile

Recall from Exercise 10.1.11 that the data file HousePrices contains data on prices ($) and sizes (in square feet) for a random sample of houses that sold in the year 2006 in Arroyo Grande,...

Questions 18 and 19 rely on the following information Debra is a jeweler that regularly purchases ingots of gold so as to manufacture jewelry. She is concerned that adverse price movements will...

value 1.42 points The following price quotations are for exchange-listed options on Primo Corporation common stock. Company Primo 61.12 Put 0.48 Strike Expiration Call 7.28 Feb With transaction costs...

What is the financial viability of Western Union in the current international financial environment? (i.e., the last 2 to 3 years)

If you have further questions, kindly ask. This is about share options On January 1, 2019, Symphony grants its president the right to choose either 10,000 ordinary shares or to receive cash payment...

One of Arianna's co-workers repeatedly makes graphic comments about her body. He also texts nude images of himself to her cell phone. Arianna has likely experienced Quid pro que harassment. Hostile...

Does M - KOPA have the basis for a sustainable competitive advantage? If so , what is that basis? If not, why not?

Scenario 4: Dresses-We-Sell Dresses-We-Sell offers a line of upscale evening dresses in a boutique. The store charges $500 per dress and sales average 20 units per week. Currently, they order 80...

At the end of each year for the next 10 years you will receive cash flows of $50. At 5.5% discount rate. How much would you pay for the annuity?

1) Predict the organicproduct formed when BzCl reacts with cyclohexanol. BzCl = benzoylchloride. 2) Provide the majororganic product of the reaction below. 3) Draw the structureof the product formed...

When n is large, the statistic s is approximately unbiased for estimating s and has approximately a normal distribution. The standard deviation of this statistic when the population distribution is...

An automobile manufacturer is considering using robots for part of its assembly process. Converting to robots is an expensive process, so it will be undertaken only if there is strong evidence that...

For the following pairs, indicate which do not comply with the rules for setting up hypotheses, and explain why: a. H0: m 5 15, Ha: m 5 15 b. H0: p 5 .4, Ha: p . .6 c. H0: m 5 123, Ha: m , 123 d. H0:...