Question 15 8 pts The flow in a river can be modeled as a log-normal distribution....
The flow in a river can be modeled as a log-normal distribution. From the data, it was estimated that, the probability that the flow exceeds 1100 cfs is 50% and the probability that it exceeds 100 cfs is 90%. Let X denote the flow in cfs in the river. What is the standard deviation of log (to the base 10) of X? 1.674 is incorrect.
Question 10 6 pts In a normal distribution, what is the approximate probability (as a percentage) of randomly selecting a value with a z-score less than z = +1.65? In other words, what percentage of scores fall below az score of 2.5% 95.0% 5.0% 97.5%
Question 4 0.4 pts Let x be the normal distribution with u=150 and o=12.5. Calculate the probability as following (round to four decimal places): P(x<145)
Sampling Distributions For Questions 6 - 8, let the random variable X follow a Normal distribution with variance σ2 = 625. Q6. A random sample of n = 50 is obtained with a sample mean, X-Bar of 180. What is the probability that population mean μ is greater than 190? a. What is Z-Score for μ greater than 190 ==> b. P[Z > Z-Score] ==> Q7. What is the probability that μ is between 198 and 211? a. What is...
4 pts Question 47 8, find the Z-score corresponding to each of the following X For a population with a h = 40 and o = values: a. X-42; b. X-52; c. X=36; d. X-32 HTML Editor A population of scores with a u = 43 and o = 8 is standardized to create a new population distribution with a fi = 50 and o = 10. What is the new X value for each of the following scores from...
This Question: 1 pt This Quiz: 14 pts pos 4 of 14 (0 complete) For the standard normal distribution shown on the right, find the probability of z occurring in the indicated region. Click here to view page 1 of the standard normal table Click here to view page 2 of the standard normal table -0.76 The probability is (Round to four decimal places as needed) Enter your answer in the answer box 8:50 PM 11/10/201
Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four dec places.) # 39; 0 = 14 P(50 SXS 70) - Need Help? Read 13. 0-M1 points BBUnder Stat12 6.3.013 My Notes Ask You Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four de places.) - 115; 0 = 15 P(x 2 90)...
Question 6 1 pts The scores on Quiz 2 follows the normal distribution with a mean of 8 and a standard deviation of 0.5. (Round your answers to two decimal places). What is the probability that a randomly selected student has a score above 8? 0.95 0.05 O.50 0.45
PART 1 PART 2 PART 3 PART 4 PART 5 PART 6 PART 7 PART 8 -11 points BBUnderStat12 22 005 Ask Your Teache My Notes It is costly in both time and money to go to college. Does it pay off? According to the Bureau of the Census, the answer is yes. The average annual income (in thousands of dollars) of a household headed by a person with the stated education level is as follows: 24.9 if ninth grade...
i need help on question 3 to 22 please. Midterm ex review. MATH 101 Use the following information to answer the next four exercises. The midterm grades on a chemistry exam, graded on a scale of 0 to 100, were: 62, 64, 65, 65, 68, 70, 72, 72, 74, 75, 75, 75, 76,78, 78, 81, 82, 83, 84, 85, 87, 88, 92, 95, 98, 98, 100, 100,740 1. Do you see any outliers in this data? If so, how would...