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leach My Notes Suppose that a category of world class runners are known to run a...
Suppose that a category of world class runners are known to run a marathon (26 miles)...
Suppose that a category of world class runners are known to run a marathon (26 miles) in an average of 148 minutes with a standard deviation of 16 minutes. Consider 49 of the races Let = the average of the 49 races. Part(a) Give the distribution of X (Round your standard deviation to two decimal places) X-N 148 (4 Part (b) Find the probability that the average of the sample will be between 145 and 149 minutes in these 49...
Suppose that a category of world class runners are known to run a marathon (26 miles)...
Suppose that a category of world class runners are known to run a marathon (26 miles) in an average of 146 minutes with a standard deviation of 15 minutes. Consider 49 of the races. Let X = the average of the 49 races. Find the probability that the average of the sample will be between 143 and 147 minutes in these 49 marathons. (Round your answer to four decimal places.) Find the 60th percentile for the average of these 49...
Suppose that a category of world class runners are known to run a marathon (26 miles)...
Suppose that a category of world class runners are known to run a marathon (26 miles) in an average of 145 minutes with a standard deviation of 12 minutes. Consider 49 of the races. Let X = the average of the 49 races. a) Find the probability that the runner will average between 144 and 148 minutes in these 49 marathons. (Round your answer to four decimal places.) b) Find the 70th percentile for the average of these 49 marathons....
Can someone please help me with number 7. Thank you 11:34 1 Part (c) Find the...
Can someone please help me with number 7. Thank you
11:34 1 Part (c) Find the 60th percentile of the distribution of the average of 49 y bals. (Round your answer to two decimal places.) Additional Materials Suppose that a category of world class runners are known to run a marathon (26 miles) in an average of 147 minutes with a standard deviation of 12 minutes, Consider 49 of the races. Let i-the average of the 49 races Part (a)...
World class marathon runners are known to run that distance (26.2 miles) in an average of...
World class marathon runners are known to run that distance (26.2 miles) in an average of 146 minutes with a standard deviation of 14 minutes. If we sampled a group of world class runners from a particular race, find the probability of the following: **(use 4 decimal places)** a.) The probability that one runner chosen at random finishes the race in less than 140 minutes. b.) The probability that 10 runners chosen at random have an average finish time of...
World class marathon runners are known to run that distance (26.2 miles) in an average of...
World class marathon runners are known to run that distance (26.2 miles) in an average of 144 minutes with a standard deviation of 15 minutes. If we sampled a group of world class runners from a particular race, find the probability of the following: **(use 4 decimal places)** a.) The probability that one runner chosen at random finishes the race in less than 138 minutes. b.) The probability that 10 runners chosen at random have an average finish time of...
8. (10 points) Suppose that (26 miles) in an average of 145 minutes with a standard...
8. (10 points) Suppose that (26 miles) in an average of 145 minutes with a standard deviation of 14 minutes. Consider 49 randomly selected runners of this category in a particular race. Let X = the average of the 49 a category of world-class runners are known to run a marathon runners' times (a) What does the central limit theorem say about the distribution of x? (b) Find the probability that the 49 (c) Would you be surprised if one...
The average time to run the 5K fun run is 21 minutes and the standard deviation...
The average time to run the 5K fun run is 21 minutes and the standard deviation is 2.7 minutes. 17 runners are randomly selected to run the 5K fun run. Round all answers to 4 decimal places where possible and assume a normal distribution. What is the distribution of XX? XX ~ N(,) What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) What is the distribution of ∑x∑x? ∑x∑x ~ N(,) If one randomly selected runner is timed, find the...
The average time to run the 5K fun run is 23 minutes and the standard deviation...
The average time to run the 5K fun run is 23 minutes and the standard deviation is 2.7 minutes. 44 runners are randomly selected to run the 5K fun run. Round all answers to 4 decimal places where possible and assume a normal distribution. What is the distribution of X ? X ~ N( , ) What is the distribution of ¯ x ? ¯ x ~ N( , ) What is the distribution of ∑ x ? ∑ x...
Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed...
Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 238 feet and a standard deviation of 44 feet. We randomly sample 49 fly balls. A) What is the probability that the 49 balls traveled an average of less than 226 feet? (Round your answer to four decimal places.) B) Find the 60th percentile of the distribution of the average of 49 fly balls. (Round your answer to two decimal...
Suppose that a category of world class runners are known to run a marathon (26 miles) in an average of 148 minutes with a standard deviation of 16 minutes. Consider 49 of the races Let = the average of the 49 races. Part(a) Give the distribution of X (Round your standard deviation to two decimal places) X-N 148 (4 Part (b) Find the probability that the average of the sample will be between 145 and 149 minutes in these 49...
Can someone please help me with number 7. Thank you
11:34 1 Part (c) Find the 60th percentile of the distribution of the average of 49 y bals. (Round your answer to two decimal places.) Additional Materials Suppose that a category of world class runners are known to run a marathon (26 miles) in an average of 147 minutes with a standard deviation of 12 minutes, Consider 49 of the races. Let i-the average of the 49 races Part (a)...
8. (10 points) Suppose that (26 miles) in an average of 145 minutes with a standard deviation of 14 minutes. Consider 49 randomly selected runners of this category in a particular race. Let X = the average of the 49 a category of world-class runners are known to run a marathon runners' times (a) What does the central limit theorem say about the distribution of x? (b) Find the probability that the 49 (c) Would you be surprised if one...
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