Suppose that a survey on the amount of daily time spent reading the local news had determined a standard deviation of 20 minutes and used a sample size of 100 persons,

What would be the standard error of the mean?

If the sample determined that there was a 50-50 split between those who listen and those who do not listen to the local news, what would be the standard error?

A lecturers hypothesis is that 60% of students are proud of their university. Lets assume that the lecturer read a Poll that 30% of respondents in a national sample of 1,000 students indicatedpride at being students. Perform and interpret a test of the lecturers hypothesis.

A local company has an internship program that allows students to participate in training and become field officers in one semester. A lecturer hypothesizes that the typical internwill be able to earn about US$2,750 in the first semester of participation in the program. To check this hypothesis, a survey was taken of 100 current interns. The sample mean is $2,800, and the standard deviation is $350. Test and interpret the hypothesis.