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Please answer part d. Thanks
3. (20 points) Let X denote the student's age with mean...
6. (Sec. 5.4) Let X denote the price for a randomly selected bouquet of 10 tulips....
6. (Sec. 5.4) Let X denote the price for a randomly selected bouquet of 10 tulips. Suppose the mean value of X is $17.50 and the standard deviation of X is $6.00. (a) Is it plausible that X is normally distributed? Explain why or why not. (b) For a random sample of 55 such bouquets, what is the approximate probability that the sample mean bouquet cost is between $15.00 and $25.00? (c) For a random sample of 55 such bouquets,...
Hello, Please answer these questions below and explain the answers step by step, Thanks! 1) Let...
Hello, Please answer these questions below and explain the answers step by step, Thanks! 1) Let x be a normally distributed random variable with mean 5 and standard deviation 15. Please express your answer as a number between 0 and 100. If you want to write 52%, please enter 52. What is the probability that x is less than or equal to 38? 2) Let x be a normally distributed random variable with mean 20 and standard deviation 10. Please...
Hello, Please answer these questions below and explain the answers step by step, Thanks! 1) Let...
Hello, Please answer these questions below and explain the answers step by step, Thanks! 1) Let x be a normally distributed random variable with mean 5 and standard deviation 15. Please express your answer as a number between 0 and 100. If you want to write 52%, please enter 52. What is the probability that x is less than or equal to 38? 2) Let x be a normally distributed random variable with mean 20 and standard deviation 10 Please...
Let x denote the time it takes to run a road race. Suppose x is approximately...
Let x denote the time it takes to run a road race. Suppose x is approximately normally distributed with a mean of 190 minutes and a standard deviation of 21 minutes. If one runner is selected at random, what is the probability that this runner will complete this road race in less than 158 minutes? Round answer to 4 decimal places.
Let x denote the time taken to run a road race. Suppose x is approximately normally...
Let x denote the time taken to run a road race. Suppose x is approximately normally distributed with a mean of 190 minutes and a standard deviation of 21 minutes. If one runner is selected at random, what is the probability that this runner will complete this road race in 218 to 242 minutes? Round answer to 4 decimal places.
Let x denote the time it takes to run a road race. Suppose x is approximately...
Let x denote the time it takes to run a road race. Suppose x is approximately normally distributed with a mean of 190 minutes and a standard deviation of 21 minutes. If one runner is selected at random, what is the probability that this runner will complete this road race in less than 162 minutes? Round your answer to four decimal places.
Let x denote the time taken to run a road race. Suppose x is approximately normally...
Let x denote the time taken to run a road race. Suppose x is approximately normally distributed with a mean of 190 minutes and a standard deviation of 21 minutes. If one runner is selected at random, what is the probability that this runner will complete this road race in 221 to 240 minutes? Round your answer to four decimal places.
Let x denote the time taken to run a road race. Suppose x is approximately normally...
Let x denote the time taken to run a road race. Suppose x is approximately normally distributed with a mean of 190 minutes and a standard deviation of 21 minutes. If one runner is selected at random, what is the probability that this runner will complete this road race in 219 to 236 minutes? Round your answer to four decimal places. P =
6.33 Let x be a continuous random variable that is normally distributed with a mean of 25 and a standard deviation o...
6.33 Let x be a continuous random variable that is normally distributed with a mean of 25 and a standard deviation of 6. Find the probability that x assumes a value a. between 28 and 34 b. between 20 and 35 6.34 Let x be a continuous random variable that has a normal distribution with a mean of 30 and a stan- dard deviation of 2. Find the probability that x assumes a value a. between 29 and 35 b....
Let X denote the courtship time for a randomly selected female-male pair of mating scorpion flies...
Let X denote the courtship time for a randomly selected female-male pair of mating scorpion flies (time from the beginning of interaction until mating). Suppose the mean value of X is 120 min and the standard deviation of X is 110 min (suggested by data in the article "Should I Stay or Should I Go? Condition- and Status-Dependent Courtship Decisions in the Scorpion Fly Panorpa Cognate"+). (a) Is it plausible that X is normally distributed? No, courtship time cannot plausibly...
6. (Sec. 5.4) Let X denote the price for a randomly selected bouquet of 10 tulips. Suppose the mean value of X is $17.50 and the standard deviation of X is $6.00. (a) Is it plausible that X is normally distributed? Explain why or why not. (b) For a random sample of 55 such bouquets, what is the approximate probability that the sample mean bouquet cost is between $15.00 and $25.00? (c) For a random sample of 55 such bouquets,...
Hello, Please answer these questions below and explain the answers step by step, Thanks! 1) Let x be a normally distributed random variable with mean 5 and standard deviation 15. Please express your answer as a number between 0 and 100. If you want to write 52%, please enter 52. What is the probability that x is less than or equal to 38? 2) Let x be a normally distributed random variable with mean 20 and standard deviation 10 Please...
6.33 Let x be a continuous random variable that is normally distributed with a mean of 25 and a standard deviation of 6. Find the probability that x assumes a value a. between 28 and 34 b. between 20 and 35 6.34 Let x be a continuous random variable that has a normal distribution with a mean of 30 and a stan- dard deviation of 2. Find the probability that x assumes a value a. between 29 and 35 b....
Let X denote the courtship time for a randomly selected female-male pair of mating scorpion flies (time from the beginning of interaction until mating). Suppose the mean value of X is 120 min and the standard deviation of X is 110 min (suggested by data in the article "Should I Stay or Should I Go? Condition- and Status-Dependent Courtship Decisions in the Scorpion Fly Panorpa Cognate"+). (a) Is it plausible that X is normally distributed? No, courtship time cannot plausibly...
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