Estimating the first-time customers from a random sample
Not what you're looking for?
The president of Doerman Distributors, Inc., believes that 26% of the firm's orders come from first-time customers. A simple random sample of 80 orders will be used to estimate the proportion of first-time customers.
Assume that the president is correct and p = 0.26. What is the sampling distribution for this study?
Select a normal distribution because np and n(1-p) are both greater than 5A normal distribution because np and n(1-p) are both less than 5A non normal distribution.
What is the probability that the sample proportion will be between .20 and .40 (to 4 decimals)?
What is the probability that the sample proportion will be between .25 and .35 (to 4 decimals)?
Purchase this Solution
Solution Summary
This solution provides a detailed, step by step explanation of the given statistics problem involving the determination of the proportion of a firm's orders that come from first-time customers using a simple random sample.
Solution Preview
** Please see the attached file for the complete solution response **
The president of Doerman Distributors, Inc., believes that 26% of the firm's orders come from first-time customers. A ...
Purchase this Solution
Free BrainMass Quizzes
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.