120 feet is (how many) times as long as 4 feet 6inches
1 answer:
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Answer:
Step-by-step explanation:
Multiply both sides by 4:
Divide both sides by 3:
Answer:
a. 4.33.
Step-by-step explanation:
If there is only one correct answer out of four alternatives, the expected proportion of correct answers is p =0.25
Sample size (n) = 100 questions
The standard deviation of a proportion 'p' is given by:
Applying the given data:
If X is the number of correct responses in 100 guesses, the standard deviation of X is:
The standard deviation of X is 4.33 questions.