Can some one explain hypothesis testing in statistics with an example?
Hypothesis testing is one of the basic practices in statistics. Hypothesis testing is a scientific method of first proposing a hypothesis and subsequently rejecting the propsed hypothesis or rejecting it. For example, one might claim that 70% of registered voters in San Francisco are Democrats. This is the proposed hypothesis, or the null hypothesis is denoted H0 (pronounced H-naught). One might then propose an alternative hypothesis, for example, that the actual percentage of registered voters in San Franciso that are Democrats is less than 70%. Without going out an asking all registered voters in the city their political affiliation, a researcher could instead take a random sample of voters from the city and ask their affiliation and record their responses. The researcher could then analyze this data with several different statistical analyses, and determine whether to accept the null hypothsis (H0) or reject it in favor of the alternative hypothesis (H1). Of course, it is important
