1. Consider the following interpretation of 90% confidence : \"90% of all possib
ID: 3023040 • Letter: 1
Question
1.Consider the following interpretation of 90% confidence: "90% of all possible confidence intervals computed using the same procedure as used to obtain (0.98, 1.02) will contain the value of ." Is this interpretation of 90% confidence correct or incorrect? Why or why not
a. Correct because it is stated in terms of the procedure not a specific calculated intervalb. Incorrect because it uses the word "probability of 0.90" to interpret "confidence" when referring to one specific calculated interval.
c. Incorrect because it states confidence as "90% of the time" when referring to one specific calculated interval.
d. Incorrect because it states that the confidence interval contains the value of the sample mean rather than the value of the population mean.
2.Consider the following interpretation of 90% confidence: "90% of the time, the confidence interval (0.98, 1.02) will contain the value of ." Is this interpretation of 90% confidence correct or incorrect? Why or why not?
a. Correct because it is stated in terms of the confidence interval procedure not just one specific calculated interval.
b. Incorrect because it uses the word "probability of 0.90" to interpret "confidence" when referring to one specific calculated interval.
c. Incorrect because it states confidence as "90% of the time" when referring to one specific calculated interval
d. Incorrect because it states that the confidence interval contains the value of the sample mean rather than the value of the population mean.
3.True or false: A "very large" observed effect will have a "very small" probability.
4.Fill in the blank: If the observed effect is about what we expect due to chance variation, then the probability on the observed effect will be _________.
a. small (<0.05)
b. large (>0.05)
Explanation / Answer
1. a. Correct because it is stated in terms of the procedure not a specific calculated interval [ANSWER]
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2. c. Incorrect because it states confidence as "90% of the time" when referring to one specific calculated interval [ANSWER]
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3. TRUE. The larger the effect size, the smaller its probability.
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4. OPTION B: LARGE [ANSWER]
Because if the probability is small, it hardly happens by chance, but we want it to be by chance.
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