Parameter and statistic in a harris interactive survey of 2276 adults in the united states, it was found that 33% of those surveyed never travel using commercial airlines. identify the population and sample. is the value of 33% a statistic or a parameter?

Which system of linear inequalities is represented by the graph?

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?