Cattle are often fattened in a feedlot before being shipped to a slaughterhouse. Suppose the weight gain per steer at a feedlot average 1.75 pounds per day, with a standard deviation of 0.295 pounds. Assume that the weight gain is normal distributed. a. What is the probability a steer will gain over two pounds on a given day? Round your answer the nearest percentage point. Show your work. b. What is the probability that the average weight gain of 25 steers will be less than two pounds on a given day? Show your work. c. What is the probability that in a random sample of 10 steers, more than 5 will gain over two pounds on a given day? Show your work.

Provide an appropriate response. Use the Standard Normal Table to find the probability. IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15. An individual's IQ score is found to be 90. Find the z-score corresponding to this value. OA. -1.33 OB. 1.33 OC. 0.67 O D. -0.67 C

The ratings of applicants for credit are normally distributed with a mean of 200 and a standard deviation of 50. Find the 60th. percentile, the rating score that separates the lower 60% from the top 40%.  Round to the nearest integer.       a. 208   b. 187   c. 211   d. 213

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Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Find the probability that a given score is less than -0.74 and draw a ketch of the region. Sketch the region. Choose the correct graph below. VA. O B. C. O D. -0.74 -0.74 0.74 -0.74 0.74 The probability is (Round to four decimal places as needed.) of

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Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find P, the 11th percentile. This is the bone density score separating the bottom 11% from the top 89%. Which graph represents P ? Choose the correct graph below. O A. O B. OD. P11 P11 P11 P11 The bone density score corresponding to P1 is (Round to two decimal places as needed.) Click to select your answer(s). APR tv MacBook Air F9 F10 LLA 20 F3 F6 F8 F4 F5 F1 F2 & #3 7 8. %24

Determine whether the statement is true or false. If it is false, rewrite it as a true statement. As the size of a sample increases, the standard deviation of the distribution of sample means increases. Choose the correct choice below. C OA. This statement is false. A true statement is, "As the size of a sample increases, the standard deviation of the distribution of sample means decreases." OB. This statement is true. OC. This statement is false. A true statement is, "As the size of a sample decreases, the standard deviation of the distribution of sample means decreases." OD. This statement is false. A true statement is, "As the size of a sample increases, the standard deviation of the distribution of sample means does not change." Time Remaining: 01:26:37

Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Dra a bone density test score greater than 0. Sketch the region. Choose the correct graph below. O A. OB. The probability is (Round to four decimal places as needed.) O C. ANA ỏ O D. SOU

The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 310 grams and a standard deviation of 10 grams. Find the weight that corresponds to each event. (Use Excel or Appendix C to calculate the z-value. Round your final answers to 2 decimal places.)    a. Highest 10 percent       b. Middle 50 percent   to   c. Highest 80 percent       d. Lowest 10 percent