The critical value from the distribution for a confidence interval of 99.8% is: t*= DNE x Use degrees of freedom of 3. Use Technology Round to 3 decimal places. d. Using the the answer from above (all rounded to 3 decimal places), calculate by hand a 99.8% confidence interval for the difference in mean wrinkle recovery angle: to Hint Round to 3 decimal places.

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Used invT like thwy wanted keep getting a domain error? 

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Permafresh
Hylite
146
190
141
183
153
176
109
148
102
A manufacturer wants to know how large is the difference in mean wrinkle recovery angle.
a. The mean and the standard deviation for the Permafresh are:
x =
130.2
V Round to 3 decimal places.
S =
23.08
Round to 3 decimal places.
b. The mean and the standard deviation for the Hylite are:
x =
174.25
Round to 3 decimal places.
S =
18.410
Round to 3 decimal places.
c. The standard error is:
SE =
13.830
Round to 3 decimal places.
The critical value from the distribution for a confidence interval of 99.8% is:
t*:
DNE
x Use degrees of freedom of 3. Use Technology Round to 3 decimal places.
d. Using the the answer from above (all rounded to 3 decimal places), calculate by hand a 99.8%
confidence interval for the difference in mean wrinkle recovery angle:
to
Hint Round to 3 decimal places.
Transcribed Image Text:Permafresh Hylite 146 190 141 183 153 176 109 148 102 A manufacturer wants to know how large is the difference in mean wrinkle recovery angle. a. The mean and the standard deviation for the Permafresh are: x = 130.2 V Round to 3 decimal places. S = 23.08 Round to 3 decimal places. b. The mean and the standard deviation for the Hylite are: x = 174.25 Round to 3 decimal places. S = 18.410 Round to 3 decimal places. c. The standard error is: SE = 13.830 Round to 3 decimal places. The critical value from the distribution for a confidence interval of 99.8% is: t*: DNE x Use degrees of freedom of 3. Use Technology Round to 3 decimal places. d. Using the the answer from above (all rounded to 3 decimal places), calculate by hand a 99.8% confidence interval for the difference in mean wrinkle recovery angle: to Hint Round to 3 decimal places.
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