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# Tutor profile: Cristian R.

Inactive
Cristian R.
Graduate teaching assistant in the heart of Cajun country
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## Questions

### Subject:Spanish

TutorMe
Question:

What is the difference in formality between the following sentences: No toques esa pared No toque esa pared

Inactive
Cristian R.

Both sentences mean the same thing but the use of "toque" signifies formality, as when talking to a teacher or employer, whereas "toques" is informal, as when talking to a friend or coworker.

### Subject:Spanish

TutorMe
Question:

When is the indirect object pronoun "le/les" changed to "se" in a sentence?

Inactive
Cristian R.

The pronoun is changed to "se" when used with a direct object pronoun as in the sentence: Se lo dije durante la reunión. The reason for the change is to make the pronunciation easier since both "le" and "lo" are single syllable words that start with the same letter.

### Subject:Statistics

TutorMe
Question:

100 groups of 50 people each are sampled on the amount of their annual income. An average is computed for each group and placed into a sampling distribution. If the original population of income is known to be positively skewed, what type of distribution would the sample of means follow?

Inactive
Cristian R.

The sample of means, or sampling distribution of the mean, would follow an approximately normal distribution. This is due to the central limit theorem which states that regardless of the distribution of the original population, the sampling distribution of the mean of any independent random variable will follow an approximately normal distribution given a large enough sample size.

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