Question
In: Statistics and Probability
The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using...
The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using premium fuel is a normally distributed random variable with a mean of u=22.00 MPG and a standard deviation of a=1.25 MPG
(a) What is the standard error of X, the mean from a random sample of 25 fill-ups by one driver?
(b) Within what interval would you expect the sample mean to fall, with 98 percent probability?
The interval is from ? to ?
Solutions
orchestra answered 2 years agoRelated Solutions
The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using...
The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder
3.5-L automatic 5-speed using premium fuel is a normally
distributed random variable with a mean of μ = 20.00 mpg
and a standard deviation of σ = 2.00 mpg.
(a) What is the standard error of X¯¯¯X¯ , the
mean from a random sample of 36 fill-ups by one driver?
(Round your answer to 4 decimal places.)
Standard error of X¯¯¯X¯
(b) Within what interval...
The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using...
The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder
3.5-L automatic 5-speed using premium fuel is a normally
distributed random variable with a mean of μ = 22.00 mpg
and a standard deviation of σ = 1.25 mpg.
(a) What is the standard error of X, the mean from
a random sample of 25 fill-ups by one driver? (Round your
answer to 4 decimal places.)
Standard error of x = _______
(b) Within what interval would...
The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using...
The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder
3.5-L automatic 5-speed using premium fuel is a normally
distributed random variable with a mean of μ = 25.25 mpg
and a standard deviation of σ = 2.00 mpg.
(a) What is the standard error of X⎯⎯⎯X¯ , the mean from a random
sample of 9 fill-ups by one driver? (Round your answer to 4 decimal
places.)
Standard error of X⎯⎯⎯X¯
(b) Within what...
the highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using...
the
highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L
automatic 5-speed using premium fuel is a normally distributed
random variable with a mean of u=25.00 mpg and a standard deviation
of o=1.75 mpg.
a) what is the standard error of X, the mean from a random
sample of 16 fill ups by one driver? (round your answer to 4
decimal places.)
b) Within what interval would you except the sample mean to
fall, with 90 percent...
the highway fuel economy of a 2016 lexus rx 350 fwd 6 cyinder 3.5l automatic 5...
the highway fuel economy of a 2016 lexus rx 350 fwd 6 cyinder
3.5l automatic 5 speed using premium fuel is a normally distributed
random variable with a mean of u=22.0 mpg and a standard deviation
of o=1.25 mpg. 1. what is the standard error of x , the mean from a
random sample of 25 fill ups by one driver? 2. within what interval
would you expect the sample to fall, with 98 percent
probability
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