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Sagot :
Option D: Type I error ("Reject the claim that the proportion of people who write with their left hand is 0.15 when the proportion is actually 0.15").
Option B: Type II error ("Fail to reject the claim that the proportion of people who write with their left hand is 0.15 when the proportion is actually different from 0.15").
Type I error:
A. Fail to reject the claim that the proportion of people who write with their left hand is 0.15 when the proportion is actually different from 0.15.
B. Reject the claim that the proportion of people who write with their left hand is 0.15 when the proportion is actually different from 0.15.
C. Fail to reject the claim that the proportion of people who write with their left hand is 0.15 when the proportion is actually 0.15.
D. Reject the claim that the proportion of people who write with their left hand is 0.15 when the proportion is actually 0.15.
A Type I error is when the null hypothesis is rejected when it is true. In this case, the null hypothesis is that "the proportion of people who write with their left hand is equal to 0.15".
The right option is D (reject the null hypothesis when it is true).
Type II error:
A. Fail to reject the claim that the proportion of people who write with their left hand is 0.15 when the proportion is actually 0.15.
B. Fail to reject the claim that the proportion of people who write with their left hand is 0.15 when the proportion is actually different from 0.15.
C. Reject the claim that the proportion of people who write with their left hand is 0.15 when the proportion is actually different from 0.15.
D. Reject the claim that the proportion of people who write with their left hand is 0.15 when the proportion is actually 0.15.
A Type II error is when the null hypothesis is failed to be rejected when the alternative hypothesis is true. In this case, the null hypothesis is that "the proportion of people who write with their left hand is equal to 0.15".
The right option is B (failed to reject the null hypothesis when it is false).
The options A and C are correct decisions, as reject the null hypothesis when it is false (Option C) and not reject the null hypothesis when it is true (Option A).
Learn more about Errors on:
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