Confidence Intervals for Gas Grills
Not what you're looking for?
1. You are given the sample mean and the sample standard deviation. use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider?
A random sample of 32 gas grills has a mean price of $630.90 and a standard deviation of $56.70.
A random sample of 156 fields of durum wheat has a mean yield of 26.8 bushels per acre and standard deviation of 8.0 bushels per acre
2. Find the critical value Zc necessary to form a confidence interval at the given level of confidence. c = 0.80 c = 0.85 c =0.97 c = 0.75
Purchase this Solution
Solution Summary
The solution produces confidence intervals for the price of gas grills.
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.