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.
It cant be converted into a mixed number because it has no whole.
Answer:
1/4
Step-by-step explanation:
There are 4 slices
3 of the 4 slices has pepperoni
4-3=1
There is 1 slice without pepperoni, making 1/4th of the pizza pepperoniless.
<em>Brainliest would be appriciated</em>
Answer:
9
Step-by-step explanation:
if every container needs 1/3 of one cup and you have 3 cups then multiply 3 by 3 and you have your answer
4x -2(3x+7)
Use the distributive property:
4x - 6x -14
Combine like terms:
-2x - 14