aidanfbussiness
22.01.2021 •
Mathematics
Shawn and Robert are comparing the scout patches they've earned. Shawn has a total of 8 patches, 5 of which are explorer patches. Robert has a total of 6 patches, 3 of which are explorer patches. Do Shawn and Robert have the same ratio of explorer patches to total patches?
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Ответ:
1.703
Step-by-step explanation:
The reason we try to find t score is because the sample size is below 30, meaning the sample size is small
Hence:
Step 1
We find the degree of freedom
The Degrees of freedom = Number of samples - 1
The random number of samples = 28
= 28 - 1
= 27
Step 2
Using a t score table or t score calculator, we can obtain the t score value for a 90% confidence interval and degree of freedom of 27
90% confidence interval =
10% significance level = 0.10 for two tails or 0.1/2 = 0.05 for one tail
Hence: t90 = 1.703