Question

4. (8 pts) A random sample of 78 students were interviewed and 59 said they would vote for a democrat in the 2008 election.

Answer 1

a point estimate for p is 75.6 %

To calculate point estimate

point estimate = $\frac{59}{78} \times 100$ = 75.6%

what is point estimate?

• In statistics, point estimating uses sample data to determine a single value that will serve as the "best guess" or "best estimate" of an unidentified population parameter.
• It is called a point estimate because it identifies a point in some parameter space (for example, the population mean). More precisely, it is the process of applying a point estimator to the data in order to produce a point estimate.
• Point estimation can be compared with interval estimation, where the interval estimates are typically either credible intervals or confidence intervals depending on whether frequentist or Bayesian inference is being used. A point estimator can be compared to a set estimator more generically.

To know more about point estimate with the given link

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Question:

A random sample of 78 students were interviewed and 59 said they would vote fore a democrat in the 2008 election. 1. Let p represent the proportion of all students at this college who will vote for a democrat. Find a point estimate p for p.