Sta 261 exam 2 - Study guides, Class notes & Summaries

STA 261 exam 2 with correct solutions

Random sampling Correct Answer employs a random device to select the sample, each member of the population has an equal chance of being selected for the sample Convenience sampling Correct Answer include individuals who are easy to sample and may not represent the population (posters, internet polls) Volunteer sampling Correct Answer most common type of convenience sampling, difficult to define the sampling frame, the sample tends not be representative of the population, as those who volun...

STA 261 Exam 2 with correct answers

Test statistic Correct Answer Describes how far the point estimate of the parameter falls from the hypothesized value of the parameter value given in the null hypothesis P-value Correct Answer The probability that the test statistic equals the observed value or value even more extreme Bootstrapping Correct Answer A simulation method that treats the sample data distribution as if it were the population distribution Resampling with replacement CLT Assumptions Correct Answer 1. Randomizat...

1. A 22-year-old man is hypotensive and tachycardic after a shotgun wound to the left shoulder. His blood pressure is initially 80/40 mm Hg. After initial fluid resuscitation his blood pressure increases to 122/84mm Hg. His heart rate is now 100 beats per minute and his respiratory rate is 28 breaths per minute. A tube thoracostomy is performed for decreased left chest breath sounds with the return of a small amount of blood and no air leak. After chest tube insertion, the most appropriate next ...

1. TQM: Total Quali- ty Management 2. Customer De- fined Quality 3. Conformance to specification 4. Example of Con- formance to specification is an integrated organizational effort designed to improve quality at every level. TQM is about meeting quality expectations as defined by the customer. measures how well the product or service meets the targets and tolerances determined by its designers. The wait for hotel room service may be specified as 20 minutes, but there may be an acceptable delay...