Testing the new population having errors

Assignment Help Basic Statistics

Reference no: EM1389857

A company has been successfully manufacturing aircraft altimeters with errors that have a standard deviation of 43.7ft. After installing new production equipment, 30 altimeters are randomly selected from the new line. This sample group has errors with a standard deviation of 54.7ft. At the 5% level of significance, test that the new population has errors with a standard deviation equal to 43.7ft.

Reference no: EM1389857

Questions Cloud

Problem related to average running time of movies : Nancy believes that the average running time of movies is equal to 140 minutes. A sample of 4 movies was taken and the following running times were obtained. Assume the population of the running times is normally distributed.

Find the observed chi sq value : A soybean mutant exhibiting tan colored seed coat was recently recognized. Crossing the mutant with wild-type,yellow-seeded soybean plant gave all yellow seeded soybeans in the first generation.

Determining modelling and simulation : The dying rate in an industrial process is department of many factors and varies according to the following distribution.

Determining histogram and frequency polygon : The following frequency distribution reports the number of frequent flier miles, reported in thousands, for employees of Brumley Statistical Consulting, Inc. during the first quarter of 2004.

Testing the new population having errors : This sample group has errors with a standard deviation of 54.7ft. At the 5% level of significance, test that the new population has errors with a standard deviation equal to 43.7ft.

Determine the realitive risk and odds ratios : Determine the realitive risk and odds ratios for a child's diagnosis of ADHD relative to exposure to lead paint, stratified by the father's diagnosis with and without ADHD.

Elementary statistics problem : An insecticide company exposes 10,000 cockroaches to its newest product, and exposes another 10,000 to their previous formula.

Electrical activity of a simulated neuron and the fast block : Describe the similarities between electrical activity of a simulated neuron and the fast block to polyspermy that occurs during fertilization in sea urchins.

Proportion of voters which has changed : After the presidential debates, a random sample of 1200 voters showed that 540 favored the Democratic candidate; 480 were in favor of the Republican candidate; 40 were in favor of the Independent candidate, and 140 were undecided. At a 1% level of..

User Account

All Pages