KatiesTomato8594 KatiesTomato8594

12-03-2020
Mathematics

contestada

. A student takes a true-false test consisting of 10 questions. Assuming that the student guesses at each question, find the probability that the student answers exactly 8 questions correctly.

Respuesta :

amna04352 amna04352

12-03-2020

Answer:

45/1024

Step-by-step explanation:

P(correct) = ½

P(incorrect) = ½

10C8×(½)⁸(½)² = 45/1024

0.0439 (3 sf)

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