Purchase Solution

How many would you expect to make an error out of 100?

Not what you're looking for?

Ask Custom Question

Suppose on average 2% make an error on their tax return. Such errors are form a Bernoulli Process. If 100 are audited for errors.

a) How many would you expect to make an error out of 100?

b) Find the probability that 4 out of 100 made an error.

c) Find the probability 3 to 6 out of 100 made an error.

Purchase this Solution
Solution Summary

Complete, Neat and Step-by-step Solutions are provided

Solution Preview

p = 2% = 0.02, q = 1 - p = 0.98, n = 100

(a) Mean = np = 100 * 0.02 = 2

(b) P(x) = nCx ...

Purchase this Solution
Free BrainMass Quizzes
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

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

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.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

View More Free Quizzes
Related BrainMass Solutions

  • Type I and Type II Errors

    If alpha = .05 was used for all hypothesis tests, how many of these 200 experiments would you expect to yield significant results? How many Type I errors would you expect? How many Type II errors would you expect?

  • Statistics: Problems and Solutions

    If it is a known fact that 13% of all residential phone numbers are unlisted and you randomly select 100 numbers from the phone book, how many of the 100 do you expect to be unlisted? 20.

  • Confidence Interval of percentage of rivets

    We would like to be accurate within 0.25% (0.0025) of the true response/mail rate for future mailings. How many mail pieces should we mail and how confident would you want to be? 6.)

  • Statistics

    You want to use a simple random sample to determine, within ± 6000 and with 99% confidence, how many of these 150,000 students own Blackberries. If you have no prior idea of how many, determine the sample size you need. 6.

  • Computing Confidence Intervals for Population Proportions

    b. 95 times out of 100 one would expect a the sample of 399 taken from the same population to have a proportion of successfully treated patients to be outside the upper and lower limits of the confidence interval computed in Question 2.

  • Probability and Combinations

    If you roll a die many times, what would you expect to be the relative frequency of rolling a number less than 6? A) 2 out of 3 B) 1 out of 3 C) 1 out of 6 D) 1 out of 2 E) 5 out of 6 8.

  • Econometrics

    Suppose that you then drop COLLEGE GPA from your model. Would you expect the standard error of the coefficient on HIGH SCHOOL GPA to become smaller or larger as a result? Explain.

  • EPA and Statistics self-efficacy

    If there is not difference between students' statistics self-efficacy at the beginning and end of the semester, how many tests would you expect to be statistically significant at the 0.05 alpha level just by random chance? B.

  • Expected Value, Standard Error, Normal Distribution

    124198 Distribution of sample means. What is expected value of M and the standard error of M for a sample of n = 4 scores? How much error would you expect for a sample of n=100 scores?

View More Related Solutions