A researcher wishes to estimate the proportion of people within a certain population who are HIV positive. Obtain a sample size that will ensure a margin of error of at most 4.8 percentage points for a 95 confidence interval.
Assume that it is reasonable to presume that the percentage of those sampled who are HIV positive will be between 3 and 7.
A) 49 B) 417 C) 109 D) 117
Question 2
The probability that a radish seed will germinate is 0.7. A gardener plants seeds in batches of 13. Find the standard deviation for the random variable X, the number of seeds germinating in each batch.
A) 1.587 B) 1.632 C) 1.652 D) 1.568
World human population growth through history illustrates an exponential growth pattern.
Cotton Production and Slave Population, 1800–1860
In plant fossils, stomatal density is used to estimate CO2 concentration in the atmosphere
Breakdown of the Population by Schooling and Wages
World Population, 10,000 B.C. to A.D. 2010
The population of a city has continued to grow since 1950.