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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¯, 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 __
If the probabilities for the first two scenarios are 0.19 and 0.37 respectively, then find the average value of sales in dollars. (two decimal places)
Determine the equation of the line of regression and describe the apparent relationship between age and peak heart rate.
a student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. she pulls
A canning company that cans pineapple juice has a machine that automatically fills 16-ounce cans. From quality control data it was found that the average amount of pineapple juice dispensed into the cans was sixteen ounces with a standard deviatio..
Assume that the same sample mean was obtained from a sample of 120 items. Provide a 95% confidence interval for the population mean (to 2 decimals).
Is 7.2 a low or high estimate than the true average amount of sleep? Answer ALL the questions. Your answer This is a required question
Box A contains three balls with colors red, green and blue and box B contains a balls with colors red, yellow ,blue, white and brown A box is chosen and a ball is picked. What is the probability that the ball may be brown is? What is the probability ..
Determine the amplitude of the secondary field of the subsurface conductor and the amplitude of its real and imaginary components. What do the obtained results reveal about the nature of the conductor?
What is the probability that only one letter is inserted in the proper envelope?
A researcher would like to evaluate the relationship between a person's age and their preference between two leading cola brands.
The lifetime of a particular brand of laptop follows a normal distribution with mean and standard deviation equal to 2.4 and 0.5 years, respectively. Assume this brand of laptop is guaranteed for 2 years,
a. Prepare a symbolic scatter plot of the data. Does it appear that there are effects of the level of research and development expenditures on mean productivity improvement? Discuss?
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