A magazine published the results of an extensive investigation of broiler chickens purchased from food stores in 23 regions. Tests for bacteria in the meat showed that 50% of the chickens were contaminated with campylobacter, 14% with salmonella, and 6% with both. a) What's the probability that a tested chicken was not contaminated with either kind of bacteria? b) Are contamination with the two kinds of bacteria disjoint? Explain. c) Are contamination with the two kinds of bacteria independent? Explain.

Q: Of all the registered automobiles in Colorado, 10% fail the state emissions test. Nine automobiles…

A: Probability, p =10% Sample size, n = 9

Q: 2. In a factory that produces pieces of ready-made concrete, if the percentage of producing…

A: Given,n=5p=0.6q=1-p=1-0.6=0.4X=no.of defective piecesX~Binomial (n=5 , p=0.6)P(X=x)=nx px qn-x    ;…

Q: 1. Some article studied the probability of death due to burn injuries. The identified risk factors…

A:

Q: ccording to a survey by Accountemps, 48% of executives believe that employees are most productive on…

A:

Q: a. What is the probability that a randomly-selected patient is obese or is diagnosed with…

A: It is given that Total = 219 Number of Obese = 90 Number of hypertension = 73 Number of Obese and…

Q: The proportions of blood phenotypes in the U.S. population are as follows:  A          B         AB…

A: From given things we write bool phenotypes and corrosponding proportions.

Q: Based on data from the Center for Statistics, 30% of adult Americans smoke. Ina sample of 12 adults:…

A: Note: As per Bartleby’s guideline for more than three subparts of a questions only first is to be…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.