Probability and Statistics Assignment | Online Homework Help

A group of 100 of the 2,500 students enrolled in a college in natural sciences reveals that 35 are 17 years old, 45 are 18 years old, 10 are 19 years old, 6 are 20 years old, three are 21 years old and one is 22 years old. a)provide an estimate for the mean, variance and standard deviation for the Age of the group. b) Find the confidence interval with a confidence bands of 90% , 95% , and 99% by approximating the sample as having been taken with replacement c) Find the same confidence intervals as in   b),   but treat the sample as taken without replacement.

Assignment Guidelines

Your Assignment should be a 3–4 page expository essay, not including the title and reference pages, and should include the following elements:

• Title page: Provide your name, title of Assignment, course and section number, and date
• Body: Answer all the questions in complete sentences and paragraphs
  • Your responses should reflect professional writing standards using proper tone and language. The writing and writing style should be correct, accurate, and reflect knowledge of professional ethics and personal values in the human service profession.
• Reference page: Sources in APA format
  • Include a minimum of twoscholarly or academic sources to support your responses and conclusions
• Use Arial or Times New Roman 12-point font, double-spaced, and left aligned
• Use standard 1″ margins on all sides
• Use APA Formatting and Citation style