What can we say about the value of the P-value?

Nov 29th, 2014
KateS
Category:
Statistics
Price: $5 USD

Question description

A lab scientist is interested in whether lab rats that grow up alone grow as large as lab rats that grow up with other rats around them to play with. He randomly selects 10 young rats with approximately the same age and size. Five of these will spend the next four monthsalone and the other five rats will each have three other rats to play with during the same time. After four months, the scientist measures the abdomen circumference of all the rats (in mm). The results are shown below:

Alone group (#1)

110

123

113

103

120

Play group (#2)

119

125

131

128

136


The sample means and sample standard deviations are

 xbar1= 113.8 and s1 = 7.98,  xbar2= 127.8 and s2 = 6.38

The sample standard deviations are fairly close in value. Based on these estimates, it is reasonable to assume that the two population variances are equal?

What can we say about the value of the P-value?

Tutor Answer

(Top Tutor) Daniel C.
(997)
School: University of Virginia
PREMIUM TUTOR

Studypool has helped 1,244,100 students

8 Reviews


Summary
Quality
Communication
On Time
Value
Five Star Tutor
Dec 6th, 2016
" Outstanding Job!!!! "
SjSurvivor143
Nov 21st, 2016
" Thanks for the help. "
Joemoe
Nov 8th, 2016
" <3 it, thanks for saving me time. "
tinytim47
Oct 30th, 2016
" Wow this is really good.... didn't expect it. Sweet!!!! "
pmallory
Oct 25th, 2016
" Totally impressed with results!! :-) "
mixedballz
Oct 16th, 2016
" excellent work as always thanks for the help "
kiln82
Oct 3rd, 2016
" awesome work thanks "
darnay
Sep 24th, 2016
" The best tutor out there!!!! "
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1829 tutors are online

Brown University





1271 Tutors

California Institute of Technology




2131 Tutors

Carnegie Mellon University




982 Tutors

Columbia University





1256 Tutors

Dartmouth University





2113 Tutors

Emory University





2279 Tutors

Harvard University





599 Tutors

Massachusetts Institute of Technology



2319 Tutors

New York University





1645 Tutors

Notre Dam University





1911 Tutors

Oklahoma University





2122 Tutors

Pennsylvania State University





932 Tutors

Princeton University





1211 Tutors

Stanford University





983 Tutors

University of California





1282 Tutors

Oxford University





123 Tutors

Yale University





2325 Tutors