Answer:
$0.013
0.010724
Explanation:
Given that :
Mean, m = 36500
Standard deviation, s = 5000
Refund of $1 per 100 mile short of 30,000 miles
A.) Expected cost of the promotion :
P(X < 30,000)
Using the Zscore relation :
Zscore = (x - m) / s
Zscore = (30000 - 36500) / 5000
= - 6500 / 5000
= - 1.3
100 miles = $1
1.3 / 100 = $0.013
b. What is the probability that Grear will refund more than $50 for a tire?
100 miles = $1
$50 = (100 * 50) = 5000 miles
Hence, more than $50 means x < (30000 - 5000) = x < 25000 miles
P(x < 25000) :
(25000 - 36500) / 5000
-11500 / 5000
= - 2.3
P(z < - 2.3) = 0.010724 (Z probability calculator)
Answer:
Using Quantifiers: ¬∃x¬S(x)≡ ∀xS(x)
English Language: All drivers obey the speed limit
Explanation:
The domain is the set of all drivers i.e. the domain of drivers
Let S(x) be the predicate “x obeys the speed limit.”
The above statement can be written as ∃x¬S(x),
The negation is represented by ¬∃x¬S(x)≡ ∀xS(x)
In English Language, it is ->, all drivers obey the speed limit
Answer:
b. Demand is unit elastic, and a decrease in price causes an increase in revenue
Explanation:
According tothe revenue theory in economics
when the demand is inelastic the relationship within price and total revenue is direct. either both increases or decreases
when the demand is elastin this relationship is inverve, teh increase in price generates a decrease in total revenue
while their decrease an increase.
But, if the demand is unit elastic then, there is no variation at all
According to this theory, option B is impossible.
Answer:
He should tell his coworker that there is mistakes, but in a polite way.
Explanation:
hope this helps
