Question

The fuel economy of a 2011 Lexus RX 350 2WD 6 cylinder 3.5 L automatic 5-speed...

The fuel economy of a 2011 Lexus RX 350 2WD 6 cylinder 3.5 L automatic 5-speed using premium fuel is a normally distributed random variable with a mean of μ = 26.75 MPG and a standard deviation of σ = 3.5 MPG. () What is the standard error of 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¯¯¯ (b) Within what interval would you expect the sample mean to fall, with 99 percent probability? (Round your answers to 4 decimal places.) The interval is from to

also the excel formula

Homework Answers

Answer #1

Please rate. Thanks!!!

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The fuel economy of a 2011 Lexus RX 350 2WD 6 cylinder 3.5 L automatic 5-speed...
The fuel economy of a 2011 Lexus RX 350 2WD 6 cylinder 3.5 L automatic 5-speed using premium fuel is a normally distributed random variable with a mean of μ = 19.5 MPG and a standard deviation of σ = 1.5 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 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 = 26.50 mpg and a standard deviation of σ = 3.25 mpg. (a) What is the standard error of X¯¯¯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¯¯¯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 = 21.50 mpg and a standard deviation of σ = 2.75 mpg. (a) What is the standard error of X⎯⎯⎯ , the mean from a random sample of 9 fill-ups by one driver? (Round your answer to 4 decimal places.) (b) Within what interval would you expect the sample mean to...
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 = 24.50 mpg and a standard deviation of σ = 3.50 mpg. (a) What is the standard error of X¯¯¯ , the mean from a random sample of 9 fill-ups by one driver? (Round your answer to 4 decimal places.)    (b) Within what interval would you expect the sample mean...
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 = 25.75 mpg and a standard deviation of σ = 2.75 mpg. (a) What is the standard error of X bar , the mean from a random sample of 36 fill-ups by one driver? (Round your answer to 4 decimal places.)    Standard error of X bar    (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 μ = 26.50 mpg and a standard deviation of σ = 3.25 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.)    (B) Within what interval would you expect the sample mean...
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 ?
8.8 The Highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed...
8.8 The Highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using premium fuel is normally distributed random variable with mean of µ = 27.0 mpg and a standard deviation of ? = 1.25 mpg: (a) What is the standard area of X ?, the mean from a random sample 16 fill-ups by one driver? (b) Within what interval would you expect the sample mean to fall with 90 percent probability?
The combined city/highway fuel economy of a 2016 Toyota 4Runner 2WD 6-cylinder 4-L automatic 5-speed using...
The combined city/highway fuel economy of a 2016 Toyota 4Runner 2WD 6-cylinder 4-L automatic 5-speed using regular gas is a normally distributed random variable with a range 19 mpg to 22 mpg. (a) Estimate the standard deviation using Method 3 (the Empirical Rule for a normal distribution) from Table 8.11. (Round your answer to 4 decimal places.)    Standard deviation = (b) What sample size is needed to estimate the mean with 95 percent confidence and an error of ±...
The table provides summary statistics on highway fuel economy of cars manufactured in 2012 (from Exercise...
The table provides summary statistics on highway fuel economy of cars manufactured in 2012 (from Exercise 5.32). Use these statistics to calculate a 98% confidence interval for the difference between average highway mileage of manual and automatic cars, and interpret this interval in the context of the data. Hwy MPG, Automatic Hwy MPG, Manual Mean 22.92 27.88 SD 5.29 5.01 n 26 26 lower bound: mpg (please round to two decimal places) upper bound: mpg (please round to two decimal...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT