For runners competing in a marathon, the mean time to run a mile is 4.2 minutes with a population standard deviation of 0.6 minutes. A news reporter is looking to include statistics for his article about fast runners. At a marathon, a random sample of 36 runners was taken and the probability that the mean time to run a mile for the sample will be less than 3.9 minutes was found. Was the probability a Left-tail, Right -tail or Interval Probability? What is the probability that the mean time to run a mile for the sample will be less than 3.9 minutes? Select the two correct answers that apply below. Use a calculator to find the probability.

multiply length by height. multiply the length by the height, and then double the product. work out 10 x 10 results = 100 square inches, then work out 100 x 2 = 200. the answer is 200 square inches.

step-by-step explanation:

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.

answer: 180 degrees clockwise

step-by-step explanation: