Computing t-test critical value if variances are equal

Assignment Help Basic Statistics

Reference no: EM1318372

Q1) For samples summarized below, test hypothesis at =.05 that two variances are equal.

	Variance	Number of data values
Sample 1	19	8
Sample 2	9	18

a) Reject hypothesis as the test value 2.11 is less than the critical value 3.16.

b)Reject hypothesis as the test value 4.46 is greater than the critical value 3.01.

c) Do not reject hypothesis as the test value 2.11 is less than the critical value 3.16.

d) Reject hypothesis as the test value 4.46 is greater than the critical value 3.01.

2) Medical researcher is interested in whether patients' left arms or right arms are longer. If 14 patients participate in this study (so that n left arms and n right arms are measured), how many degrees of freedom must researcher use in her t-test critical value supposing that variances are equal?

A)13

B) 27

C) 14

D) 26

Reference no: EM1318372

Questions Cloud

High level overview of methods-options and recommendations : Prepare a high-level overview of methods, options, and recommendations for the types of methods and tools that you believe will be best suited to the situation.

Point estimate for the population mean : What is a point estimate for the population mean µ?

Application of matrices in real word problems : Application of matrices in real word problems -Five neighborhoods ( NB ) all want to raise money for a playground for their kids.

Implenting a code : Write down a fragment of code which reads a line of text (using getline) from standard input containing of a last name followed by the first name

Computing t-test critical value if variances are equal : How many degrees of freedom must researcher use in her t-test critical value supposing that variances are equal?

Create histograms for both frequencies : Evaluate your histograms for any outliers in your data. Based on your evaluation of outliers, you may trim no more than 1% of the data contained in the data set. This must be done symmetrically (i.e., trimming no more than 0.5% off the top and 0.5..

Competitive environment of baldwin company : Buzz is a product of the Baldwin Company which is primarily in Nano segment, but is also sold in another segment. Baldwin starts to generate their sales forecast by supposing all policies (R&D, Marketing, and Production) for all competitors are equ..

Utilitarian and libertarian : Explain the differences between the two approaches: Utilitarian and Libertarian? one should understand some points that might lead to confusion and misapplication”. Explain and comments on three points only.

Confidence interval for the mean amount of money : Find a 95% confidence interval for the mean amount of money µ spent at the waiter's tables.

User Account

All Pages