Suppose that weekly use of gasoline for motor vehicle travel by adults in north america follows a distribution with a mean of 20 gallons and a standard deviation of 6 gallons. now, suppose a random sample of 45 adults is taken and the average amount of gas used each week is 18.2. what is the shape, mean and standard deviation of the sampling distribution of the sample mean?

What is the quadric regression equation that fits these data

With this question substitute t=3 and t=5 to determine if the two expressions are equivalent. 4(t + 3) 4t+12 which statements are true? check all that apply. a. the value of both expressions when t =5 is 32. b. the two expressions are not equivalent. c. the value of both expressions when t=3 is 15. d. the value of both expressions when t=5 is 23. e. the two expressions are equivalent. f. the value of both expressions when t=3 is 24.

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red