BBM203/03: David set a mathematics quiz for his students The quiz is marked out of 10 His students’ marks are summarized: Business Statistics Assignment, WOU, Malaysia

School

Wawasan Open University (WOU)

*We aren't endorsed by this school

Assignment Type

Individual Assignment

Subject

BBM203/03: Business Statistics

Uploaded by Malaysia Assignment Help

Date

18/07/2022

Question 1

David set a mathematics quiz for his students. The quiz is marked out of 10. His students’ marks are summarized in the table below:

  • Construct an appropriate frequency table and draw a histogram to depict the data above
  • Compute the mean
  • Calculate the variance and standard deviation
  • Calculate the coefficient of variation
  • Interpret the distribution of marks as shown in your histogram

Question 2

Explain the following concepts:

  • Confidence levels
  • Qualitative data
  • Multiplication rule
  • Bayes’ Law

Question 3

Part 1

A researcher collected a sample of 50 respondents in a shopping mall on a weekend. The data are organized in the table below:

Calculate the following probabilities

  • Prob (A)
  • Prob (University graduate)
  • Prob (A University graduate)
  • Prob (University graduate A)

Part 2

The random variable Y follows a normal distribution with mean µ and variance σ2 , i.e. Y  N(µ, σ2). Suppose we have the following information:

P(X ≤ 66) = 0.0421 and P(X ≥ 81) = 0.1298

(a) Compute the value of σ = 5

(c) Calculate P(65 ≤ X ≤ 74)

Question 4

  • A sample of test scores is obtained. The scores are displayed as follows:

11, 16, 19, 15, 7, 8, 10

Test the hypothesis that the mean score is 15 at a 1% significance level

  • A chemical manufacturer is concerned about the degree of contamination in the raw material shipments purchased from a supplier. Taking a random sample of 20 shipments of raw materials, the standard deviation of contamination is 3.59. Construct the 95% confidence interval for population variance.

Stuck in This Assignment? Deadlines Are Near?

Get Help By Expert

If you are still looking for trustworthy university Assignment Help your search ends here. The Malaysia Assignment Help has got the largest team of expert professional writers who provide the step by step solution on statistic assignment at an affordable price.

Answer

UP TO 15 % DISCOUNT

Instant Paper Writing Services by Native Malaysia Writers

Plagiarism Free Solutions
100% Original Work
24*7 Online Assistance
Native PhD Experts
Hire a Writer Now
Convincing Features
Plagiarism Free Report
On-Time Delivery
Native Writers
A+ Quality
100% Confidential
24*7 Online Assistance

Get these features included in Your Assignment

Get Assistance for Assignments, online Exam, and Projects Writing