Answer: the probability that a randomly selected tire will have a life of exactly 47,500 miles is 0.067
Step-by-step explanation:
Since the life expectancy of a particular brand of tire is normally distributed, we would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = life expectancy of the brand of tire in miles.
µ = mean
σ = standard deviation
From the information given,
µ = 40000 miles
σ = 5000 miles
The probability that a randomly selected tire will have a life of exactly 47,500 miles
P(x = 47500)
For x = 47500,
z = (40000 - 47500)/5000 = - 1.5
Looking at the normal distribution table, the probability corresponding to the z score is 0.067
All you’re doing is subtracting $15.35 from $20.00. After you get the answer, add $1.25 as many times as possible before it exceeds the number you got from the first subtraction.
$20.00 - 15.35 = $4.65
$1.25 x 3 = $3.75
(Anything over $3.75 would require additional money, so you couldn’t buy any more chocolate bunnies than 3.)
You could buy 3 chocolate bunnies after purchasing 1 dozen tulips for $15.35 with the remaining $4.65 you have left.
I struggle with math myself, so I’d recommend working it out on your own instead of pasting online answers because it pays off in the end! <3
Answer:
2
- 5
Step-by-step explanation: