kenldykido2220 kenldykido2220

02-01-2023
Mathematics

Answered

Soledad and Tania are both high school students. The number of texts Soledad sends daily, S, is approximately Normally distributed with a mean of 100 and a standard deviation of 6 texts. The number of texts Tania sends daily, T, is approximately Normally distributed with a mean of 108 and a standard deviation of 8. 1 texts. Assume that S and T are independent random variables. Let D = S – T.

What is the probability that Soledad sends more texts on a randomly selected day?

0. 104

0. 214

0. 786

0. 896

Answer :

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