Determine if the 2 suppliers have equal standard deviations

Assignment Help Basic Statistics
Reference no: EM13241387

A random sample of rivets from 2 suppliers were compared to see what the mean diameter was from each and a test to determine whether the population means were the same for the 2 suppliers. Now a comparison of the variation in diameter is needed. Company A has a mean of 0.375 and a standard deviation of 0.00082. Company B has a mean of 0.375 and a standard deviation of 0.03808. What is the appropriate hypothesis test to determine if the 2 suppliers have equal standard deviations (using a significance level equal to 0.05)?

Reference no: EM13241387

Around what values do the observations tend to cluster

What is this chart called? How many observations are in the study? What are the maximum and the minimum values? Around what values do the observations tend to cluster?

Recent study of abusing partner physically or sexually

A recent study, "[b]ased on data from a survey of nearly 1,500 Boston men aged 18 to 35 years...found that 16 percent of the men - about one in six -- said they had abused t

Determine output voltage as function of time and power gain

An amplifier having Ri = 1M Ω, Ro = 1kΩ, and Avoc = -104 is operated with a 1-kΩ load. A source having a Thévenin resistance of 2 MΩ and an open-circuit voltage of 3 cos(200

Why is the normality assumption not a problem

Construct a 95% confidence intervalfor the population proportion of positive drug tests. Why is the normality assumption not a problem despite the very small value of p?

Elementary probability theory

Diagnosis tests of medical conditions have several results. The test result can be positive or negative, whether or not a patient has the condition.

Determine the mean and median for data

According to Honda Motor Co., Inc., the exchange rate (yen per U.S. dollar) from 1998 through 2005 was 123, 128, 112, 111, 125, 122, 113, and 108. Determine the mean and med

Explain why is not the mean the fiftieth percentile

The simplest useful numerical description of a distribution consists of measure of center and measure of spread. The Median is the 50th percentile. Q: Why is not the Mean t

Sample data for census bureau statistics

A health magazine presented results of a recent study that analyzed data collected by the U.S. Census Bureau in 2000. Results reveal that for both men and women in the Unite

Reviews

Write a Review

 
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd