A spinner with nine equal-sized sections numbered one to nine is spun once. What is the probability that the spinner will land o
1 answer:
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Answer: 0.5467
Step-by-step explanation:
Let X be the random variable that represents the income (in dollars) of a randomly selected person.
Given :
Sample size : n=350
z-score :
To find the probability that the sample mean would differ from the true mean by less than 22 dollars, the interval will be
For x=15429
For x=15473
The required probability :-
Hence, the required probability is 0.5467.
<u>PEMDAS</u>
Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. PEMDAS is the order of operations, and stands for:
Parenthesis, Exponents (& Roots), Multiplication, Division, Addition, Subtraction.
First, divide 3 from both sides of the equation:
Next, isolate the variable, x, by rooting both sides of the equation:
x = ±4
C) ±4 is your answer.
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