Question: A researcher wanted to compare whetherlanguage makes a difference in recalling sequences of numbers. Each test involved briefly displaying a random sequence of digits and

A researcher wanted to compare whetherlanguage makes a difference in recalling sequences of numbers.

Each test involved briefly displaying a random sequence of digits and then asking the participant to recall as much of the sequence as they could.

The data collectedfor a sample of English speakers and a sample of Chinese speakers were as follows. The means given are the average number of digits that could beremembered from the sequence.

	English	Chinese
Count	36	26
Mean	7.12	8.18
Median	7	8
StDev	1.339	2.507

Calculate a 95% confidence interval for the difference (English score - Chinese score) in average recall for English and Chinese speakers and choose the correct answer. Use df = n₁ + n₂ - 2.

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