An ice cream truck began its daily route with 95 gallons of ice cream. The truck driver sold 78% of the ice cream. How many gall
2 answers:
Answer:
74.1 gallons
Step-by-step explanation:
An ice cream truck started its daily route with the amount of ice cream = 95 gallons
The truck driver sold the amount of ice cream = 78% of 95 gallons
The amount of ice cream were sold = 78% × 95
=
= 0.78 × 95
= 74.1 gallons
74.1 gallons of ice cream were sold.
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Answer: a) (1008.34,1019.658) b) (1009.24,1018.76)
Step-by-step explanation:
Since we have given that
n = 75
mean = 1014 hours
Standard deviation = 25 hours
At 95% two sided , z = 1.96
So, confidence interval would be
(b) Construct a 95% lower confidence bound on the mean life.
z = 1.65
So, confidence interval would be
Hence, a) (1008.34,1019.658) b) (1009.24,1018.76)