marygailbowen7711 marygailbowen7711
  • 18-12-2020
  • Mathematics
contestada

A quiz consists of 920 true or false questions. If the student guesses on each question, what is the mean number of correct answers

Respuesta :

ogorwyne
ogorwyne ogorwyne
  • 19-12-2020

Answer:

460

Step-by-step explanation:

This quiz is Said to consist of 920 questions. Each if these questions have 2 options of answering them only. Which is True or False.

True represents correct = 0.5

False represents wrong = 0.5

The probability of correct is = 0.5

With a sample size of 920

Mean = no

= 920x0.5

= 460

So the mean number of correct answer from this calculations I just did is equal to 460

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