2) The table below compares two samples taken to compare the mean age of individuals who purchased the iPhone 3G at two AT&T store locations. Very briefly, what conclusions can you draw? t-test, pooled variance t-test, unequal variance Ann Arbor Ann Arbor Livonia 25.8171| 31.2480 mean 3.3891 1.8740 std. dev. 10n Livonia 25.8171 31.2480 mean 1.8740 std. dev. 10n 3.3891 8 df -5.43086 difference (Ann Arbc 15 df -5.43086 difference (Ann Arbor - Livonia) 6.70157 pooled variance 2.58874 pooled std. dev. 1.27574 standard error of difference 1.41141 standard error of diff O hypothesized differe O hypothesized difference -3.85 t
2) The table below compares two samples taken to compare the mean age of individuals who purchased the iPhone 3G at two AT&T store locations. Very briefly, what conclusions can you draw? t-test, pooled variance t-test, unequal variance Ann Arbor Ann Arbor Livonia 25.8171| 31.2480 mean 3.3891 1.8740 std. dev. 10n Livonia 25.8171 31.2480 mean 1.8740 std. dev. 10n 3.3891 8 df -5.43086 difference (Ann Arbc 15 df -5.43086 difference (Ann Arbor - Livonia) 6.70157 pooled variance 2.58874 pooled std. dev. 1.27574 standard error of difference 1.41141 standard error of diff O hypothesized differe O hypothesized difference -3.85 t
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
![2) The table below compares two samples taken to compare the mean age of
individuals who purchased the iPhone 3G at two AT&T store locations. Very
briefly, what conclusions can you draw?
1
t-test, pooled variance
t-test, unequal variance
Ann Arbor
Livonia
Ann Arbor
Livonia
25.8171 31.2480 mean
1.8740 std. dev.
10 n
31.2480 mean
1.8740 std. dev.
10 n
25.8171
3.3891
3.3891
8 df
-5.43086 difference (Ann Arbc
15 df
-5.43086 difference (Ann Arbor - Livonia)
6.70157 pooled variance
2.58874 pooled std. dev.
1.27574 standard error of difference
1.41141 standard error of diff
O hypothesized differe
O hypothesized difference
-3.85 t
.0024 p-value (one-tailed,
-4.26 t
.0003 p-value (one-tailed, lower)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F62c5d8d4-bf52-40ff-9a64-70401b9ed938%2F7c02d502-ba98-4f29-95ec-c768c584f88d%2Fxeu1bzv_processed.png&w=3840&q=75)
Transcribed Image Text:2) The table below compares two samples taken to compare the mean age of
individuals who purchased the iPhone 3G at two AT&T store locations. Very
briefly, what conclusions can you draw?
1
t-test, pooled variance
t-test, unequal variance
Ann Arbor
Livonia
Ann Arbor
Livonia
25.8171 31.2480 mean
1.8740 std. dev.
10 n
31.2480 mean
1.8740 std. dev.
10 n
25.8171
3.3891
3.3891
8 df
-5.43086 difference (Ann Arbc
15 df
-5.43086 difference (Ann Arbor - Livonia)
6.70157 pooled variance
2.58874 pooled std. dev.
1.27574 standard error of difference
1.41141 standard error of diff
O hypothesized differe
O hypothesized difference
-3.85 t
.0024 p-value (one-tailed,
-4.26 t
.0003 p-value (one-tailed, lower)
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