Answer:
Step-by-step explanation:
standard deviation σ =5000
Mean μ = 36500
X = 30000
Probability that tire fails to reach 30000 miles
P(< 30000) = P( z < (30000-36500) / 5000 )
= P ( z < - 1.3 )
= .0968 ( from z table )
refund per mile = .01
refund for 30000 mile = .01 x 30000 = 300
expected cost of promotion
= 300 x .0968
= 29.04
b )
refund of $50 is equivalent to shortage of milage by 50 / .01 = 5000 miles
Probability of miles less than 30000 - 5000 = 25000
P ( X < 25000 ) = P ( z < (25000 - 36500) / 5000 )
P ( z < - 2.3 )
= 0.0107 Answer .
Step-by-step explanation:
carly had nothing, amount of money = £0
amy gave her £7 and brad gave her £5,
carly now has £5 and £7
amount of money of carly= £7 + £5
= £12
you are told that they all have the same amount of money and you know that carly has £12. so:
amy has £12, brad has £12 too.
If amy has £ 12 now after giving away £7, then: let x be the initial amount of money amy had,
x - 7 = 12
x = 12 + 7
x = 19
thus, amy had £19.
have a beautiful day/night!
-s.
Answer:
Max's team 5.75
Williams team 5.6
Max's team had better run rate
Answer:
The answer is 235
Step-by-step explanation:
it's just basic long divistion.
