week5 - Construct a 90% CI for , the mean susceptibility...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Statistics 511 (4.13) Normal Approximation to the Binomial To improve approximation: Ex. In a large university, 25% of the students are over 21 years old. In a sample of 400 students, what is the probability that more than 110 of them are over 21 years old?
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Chapter 5: Relevant Sections: 5.1 – 5.4 (5.1) Inference (5.2) Estimation for µ Point estimate: y Interval estimate: Confidence interval for a parameter: MOE Confidence coefficient Notes:
Background image of page 2
3 (5.3) Sample Size needed to estimate µ with a 100(1- α ) % CI How to determine σ: Ex. 5.14 An experiment is conducted to examine the susceptibility of lemon tree root stocks to a specific larva. Forty plants are subjected to the larvae. Researchers recorded the log( number of larvae per gram counted on each root stock) as a measure of susceptibility and recorded the following: n=40, y =9.02 and s = 1.12.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Construct a 90% CI for , the mean susceptibility for the population of lemon tree root stock. Ex. 5.22 The city housing department wants to estimate the average rent for rent controlled apartments. They need to determine the number of renters to include in the survey to estimate the average rent to within $50 using a 90% CI. Past results show that the rent for controlled apartments ranged from $200 to $1500 per month. How many renters are needed in the survey? 4 (5.4) Statistical/Hypothesis Testing for Null hypothesis Research (Alternative) Hypothesis Notes: Components of a Test Test Statistic Rejection region Errors Type I error Type II error 5 5 Step Procedure for a Statistical Test 1-2. State Hypotheses 3. Compute TS 4. Identify RR 5. Draw conclusions When is test appropriate? Evaluating Tests: Power...
View Full Document

This note was uploaded on 04/28/2008 for the course ST 511 taught by Professor Prof.kimweems during the Spring '08 term at N.C. State.

Page1 / 5

week5 - Construct a 90% CI for , the mean susceptibility...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online