Our smartphone bill ranges from 60 to 130 dollars (US) every monthtutor4helpyou
1)Our smartphone bill ranges from 60 to 130 dollars (US) every month. Each dollar amount between 60 and 130 is equally likely to appear on our monthly bill.
a) What is the probability that your smartphone bill is less than $70 or greater than $115?
b) Half way through your billing cycle the bill amount is at $95. Given this information, what is the
probability that your bill will be less than $120?
- 7 years ago
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