Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Durable press cotton fabrics are treated to improve their recovery from wrinkles after washing. Wrinkle recovery angle measures how well a fabric recovers from wrinkles.

"Durable press" cotton fabrics are treated to improve their recovery from wrinkles after washing. "Wrinkle recovery angle" measures how well a fabric recovers from wrinkles. Higher is better. Here are data on the wrinkle recovery angle (in degrees) for a random sample of fabric specimens. Assume the populations are approximately normally distributed with unequal variances. A manufacturer believes that the mean wrinkle recovery angle for Hylite is better. A random sample of 25 Hylite (group 1) and 20 Permafresh (group 2) were measured. Test the claim using a 10% level of significance.

Hylite

Permafresh

141

124

140

145

138

136

138

117

138

133

141

139

141

105

132

127

141

137

135

139

146

165

142

131

139

137

131

147

133

148

146

142

139

116

146

148

137

133

142

136

137

134

137

138

143

The Hypotheses for this problem are:

H0: 1= 2

H1: 1> 2

Find the p-value. Round answer to 4 decimal places. Make sure you put the 0 in front of the decimal.

p-value=___

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Algebra And Trigonometry Enhanced With Graphing Utilities

Authors: Michael Sullivan, Michael Sullivan III

7th Edition

0134269039, 9780134269030

More Books

Students also viewed these Mathematics questions