Purchase Solution

Variance and the standard deviation of the number of University admissions

Not what you're looking for?

Ask Custom Question

The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience.
What is the expected number of admissions for the fall semester?

Compute the variance and the standard deviation of the number of admissions.

Admissions Probability
1,000 .6
1,200 .3
1,500 .1

Purchase this Solution
Solution Summary

This computes variance and standard deviation of the number of University admissions given admission values and probability.

Solution Preview

The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience.
What ...

Solution provided by:
Changping Wang, MA
Education
  • BSc , Wuhan Univ. China
  • MA, Shandong Univ.
Recent Feedback
  • "Your solution, looks excellent. I recognize things from previous chapters. I have seen the standard deviation formula you used to get 5.154. I do understand the Central Limit Theorem needs the sample size (n) to be greater than 30, we have 100. I do understand the sample mean(s) of the population will follow a normal distribution, and that CLT states the sample mean of population is the population (mean), we have 143.74. But when and WHY do we use the standard deviation formula where you got 5.154. WHEN & Why use standard deviation of the sample mean. I don't understand, why don't we simply use the "100" I understand that standard deviation is the square root of variance. I do understand that the variance is the square of the differences of each sample data value minus the mean. But somehow, why not use 100, why use standard deviation of sample mean? Please help explain."
  • "excellent work"
  • "Thank you so much for all of your help!!! I will be posting another assignment. Please let me know (once posted), if the credits I'm offering is enough or you ! Thanks again!"
  • "Thank you"
  • "Thank you very much for your valuable time and assistance!"
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

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.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

View More Free Quizzes
Related BrainMass Solutions

  • variance and the standard deviation of the number of admissions

    362409 variance and the standard deviation of the number of admissions The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience.

  • Expected number of admissions

    = sqrt(Variance) = sqrt (53109) = 230.45 The Solution provides the expected number of admissions, Variance and Standard deviation.

  • Coefficient of Variation For Prices of Stoks and Admissions into University

    Compute the variance and the standard deviation of the number of admissions. Admissions Probability 1,000 .6 1,200 .3 1,500 .1 The solution is in the attached file.

  • Probability Exclusive Events

    Compute the variance and the standard deviation of the number of admissions.

  • Hypergeometric, binomial and uniform distribution

    Expected number of admissions 2.Compute the variance and the standard deviation of the number of admissions. (Round your standard deviation to 2 decimal places.)

  • Coefficient of variation, Normal probability

    Compute the variance and the standard deviation of the number of admissions. Admissions Probability 1,000 .6 1,200 .3 1,500 .1 Chapter 7, Exercise 44 44.

  • Probability

    Expected number of admissions (2) Compute the variance and the standard deviation of the number of admissions. (Round your answers to 2 decimal places.)

  • Various Statistical Situations

    Deviation 11.19 Standard Deviation 16.73 Sample Variance 2.27 Sample Variance 125.16 Sample Variance 280.01 Kurtosis -0.37 Kurtosis 3.14 Kurtosis -0.17 Skewness -0.12 Skewness 1.49 Skewness -0.78 Range 5.00 Range 40.00 Range 54.00 Minimum 3.00 Minimum

  • MCQs: Hypothesis Testing

    The director randomly selects 64 different 24-hour periods and determines the number of admissions for each. For this sample, the sample mean= 9.8 and the sample variance=25.

View More Related Solutions