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 = 26.75 mpg and a standard deviation of o = 3.50 mpg. (a) 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 < Prey 3 of 10 Next > 46°F Rain showers to search 近

​Full-time college students report spending a mean of 24 hours per week on academic​ activities, both inside and outside the classroom. Assume the standard deviation of time spent on academic activities is 4 hours.   If you select a random sample of 100 ​full-time college​ students, there is an 82​% chance that the sample mean is less than how many hours per​ week? ​(Round to two decimal places as​ needed.)

The mean score on a driving exam for a group of driver’s education students is 76 points, with a standard deviation of 6 points. Apply chebychev’s theorem to the data using K=2. Interpret, At least ___% of the exam score falls between ___and ____

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 = 25.00 mpg and a standard deviation of σ = 1.75 mpg. (a) What is the standard error of Xbar , the mean from a random sample of 16 fill-ups by one driver? (Round your answer to 4 decimal places.)  Standard error of   Xbar            (b) Within what interval would you expect the sample mean to fall, with 90 percent probability? (Round your answers to 4 decimal places.)  The interval is from_______  to:_________

The number of peanuts in a 16 ounce can of nut munchies is normally distributed with a mean of 93.6 and a standard deviation of 4.2 peanuts the number of peanuts in a 20 ounce can of gone nuts is normally distributed with a mean of 111.8 and a standard deviation of 3.4 peanuts. (a) Carmen purchased a 16 ounce can of nut munchies and counted 100 peanuts what is the Z score for this can of peanuts? (b) Angelo purchased a 20 ounce can of gone nuts and counted 116 peanuts what is the Z score for this can of peanuts? (c) Carmen declares that purchase purchasing her can of nut munchies with 100 peanuts is less likely than Angelo purchasing a can of gone nuts with 116 peanuts is Carmen statement correct? Use the definition of a Z score to support or refute Carmen's claim.

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¯¯¯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 would you expect the sample mean to fall, with 98 percent probability? (Round your answers to 4 decimal places.)  The interval is from  to

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 o = 2.00 mpg. %3D (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.) Standard error of X (b) Within what interval would you expect the sample mean to fall, with 95 percent probability? (Round your answers to 4 decimal places.) The interval is from to ces 330 PM %23 10/25/2020 ere to search

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The highway fuel economy of a 2016 Lexus RX 350 four-wheel drive 6 cylinder 3.5-L automatic 5-speed using premium fuel is a normally distributed random variable with a mean of m= 26.75 MPG and a standard deviation of 0=3.50 mpg. A.  What is the standard error of x, the mean from a random sample of 36 fill-ups by one driver? ( Round your answers to 4 decimal places). Standard error of x_______. B.  Within what interval would you expect the sample mean to fall with 99% probability? (Round your answers to four decimal places.) The interval is from_____to_______.

The salaries of professional baseball players are heavily skewed right with a mean of $3.2 million and a standard deviation of $2 million. The salaries of professional football players are also heavily skewed right with a mean of $1.9 million and a standard deviation of $1.5 million. A random sample of 40 baseball players’ salaries and 35 football players’ salaries is selected. The mean salary is determined for both samples. Let  represent the difference in the mean salaries for baseball and football players. Which of the following represents the shape of the sampling distribution for ? skewed right since the populations are both right skewed skewed right since the differences in salaries cannot be negative approximately Normal since both sample sizes are greater than 30 approximately Normal since the sum of the sample sizes is greater than 30