Your friend checks the newspaper every morning to see what the astrologer writes. She trusts this information because it is pseu
2 answers:
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Answer:
a) X ~
b) μ = 100/3
c)
d) A battery is expected to last 100/3 months (33 months and 10 days approximately).
e) For seven batteries, i would expect them to last 700/3 months (approximately 19 years, 5 months and 10 days).
Step-by-step explanation:
a) The life of a battery is usually modeled with an exponential distribution X ~
b) The mean of X is μ = 1/0.03 = 100/3
c) The standard deviation is
d) The expected value of the bateery life is equal to its mean, hence it is 100/3 months.
e) The expected value of 7 (independent) batteries is the sum of the expected values of each one, hence it is 7*100/3 = 700/3 months.
Answer:
Minimum: (2,4)
Step-by-step explanation:
h(x)=3(-4x)+16
=3(-4x+4-4)+16 (- For the balance of equation, and attention 1)
=3-3*4+16
=3+4
1.
2. The formula for the vertex form is y = , the vertex is (h,k)