Question 1201808
kenya had a mean of 5023.5 and a standard devition of 1092.6 with a sample size of 10.
tanzania had a mean of 4483.8 and a standard deviation of 1415.2 with a sample size of 9.


t-test for kenys indicated that the results were significant with the conclusion that the mean is above 4000.
the test t-value was 2.96228371332815.
the critical t-value at 95% one tailed condidence interval on the high end was 1.83.
the test t-value was greater than that, so the results were considered significant, indicating that the kenya mean was greater than 4000.


t-test for tanzania indicaed that there wasn't sufficient information to conslude that the mean is above 4000.
the test t-value was 1.0255794234030529.
the critical t-value at 95% one tailed confidence interval on the high end wass 1.83.
the test t-value was not greater than that, so the results were not considered significant, indicating that the tanzania mean was not greater than 4000.


95% confidence iterval for the true mean of kenya is from 441.9 to 5805.1.


here are the links to the results from the calculators that i used.


kenya statistics:
<img src = "http://theo.x10hosting.com/2023/Question 1201808 kenya statistics.jpg">


tanzania statistics:
<img src = "http://theo.x10hosting.com/2023/Question 1201808 tanzania statistics.jpg">


kenya t-test:
<img src = "http://theo.x10hosting.com/2023/Question 1201808 kenya t-test.jpg">


tanzania t-test:
<img src = "http://theo.x10hosting.com/2023/Question 1201808 tanzania t-test.jpg">


95% two tailed confidence interval for kenya:
<img src = "http://theo.x10hosting.com/2023/Question 1201808 confidence interval.jpg">