In a distribution of 576 values with a mean of 72, at least 540 fall within the interval 67-77. Approximately what percentage of values should fall in the interval 62-82? Use Chebyshev's theorem. Round your k to one decimal place, your s to two decimal places, and the final answer to two decimal places.

← A study considers if the mean score on a college entrance exam for students in 2005 is any different from the mean score of 499 for students who took the same exam in 1975. Let u represent the mean score for all students who took the exam in 2005. For a random sample of 40,000 students who took the exam in 2005, x = 497 and s= 100. Use this information to complete parts a through c below. a. Find the test statistic. t = -4 (Round to two decimal places as needed.) b. Find the P-value for testing Ho: μ = 499 against H₂: μ#499. (Round to three decimal places as needed.) The P-value is ...

A population of N = 8 scores has a mean of M = 10.  After one score is removed, the mean is found to be M = 5  What is the value of the score that was added? A   X = 45 B   X = 35 C   X = 50 D   X = 80

The distances golf balls travel under laboratory testing conditions are normally distributed. The mean is 312 yards. The probability the golf ball travels further than 319 yards is 0.28. Find the probability a randomly selected golf ball travels between 305 yards and 319 yards. Express the answer as a decimal value rounded to the nearest hundredth.