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Can someone please help me with number 7. Thank you
11:34 1 Part (c) Find the...
leach My Notes Suppose that a category of world class runners are known to run a...
leach My Notes 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 15 minutes. Consider 49 of the races. Let x = the average of the 49 races. a Part (a) Give the distribution of (Round your standard deviation to two decimal places.) Part (b) Find the probability that the runner will average between 146 and 149 minutes in these 49 marathons....
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....
please help The cost of unleaded gasoline in the Bay Area once followed an unknown distribution...
please help
The cost of unleaded gasoline in the Bay Area once followed an unknown distribution with a mean of $2.39 and a standard deviation of $0.04. Steen gas stations from the Bay Area redomly chosen. We are interested in the average stof gasoline for the 16 gas stations What is the probability that the average price for 16 gas stations is over $2.43 The probability is almost zero 0.0668 0.1587 0.8413 The probability is almost one.
The cost of unleaded gasoline in the Bay Area once followed an unknown distribution with a mean of $4.59 and a sta...
The cost of unleaded gasoline in the Bay Area once followed an unknown distribution with a mean of $4.59 and a standard deviation of $0.10. Sbuteen gas stations from the Bay Area are randomly chosen. We are interested in the average cost of gasoline for the 16 gas stations. (1) The distribution to use for the average cost of gasoline for the 16 gas stations is: OAX - N(4.59, 0.1 OB X-(4.59, 0.1 OCX - N(4.59,0.1) OD:X-N(4.59, QUESTION 8 (2)...
QUESTION 7 5 points Save Answer Use the following to answer the next three exercises: The...
QUESTION 7 5 points Save Answer Use the following to answer the next three exercises: The cost of unleaded gasoline in the Bay Area once followed an unknown distribution with a mean of $4.59 and a standard deviation of $0.10. Sixteen gas stations from the Bay Area are randomly chosen. We are interested in the average cost of gasoline for the 16 gas stations. (1) The distribution to use for the average cost of gasoline for the 16 gas stations...
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 248 feet and a standard deviation of 46 feet. We randomly sample 49 fly balls. Part(a) If X = average distance in feet for 49 fly balls, then give the distribution of X Round your standard deviation to two decimal places Part (b) What is the probability that the 49 balls traveled an average of less than 238 feet? (Round...
An analyst from an energy research institute in California wishes to estimate the 99% confidence interval...
An analyst from an energy research institute in California wishes to estimate the 99% confidence interval for the average price of unleaded gasoline in the state. In particular, she does not want the sample mean to deviate from the population mean by more than $0.13. What is the minimum number of gas stations that she should include in her sample if she uses the standard deviation estimate of $0.35, as reported in the popular press? (You may find it useful...
Can someone please help me with my central limit theorem homework? Thank you much! 1. A...
Can someone please help me with my central limit theorem homework? Thank you much! 1. A population has parameters μ=36.3 and 57.1. You intend to draw a random sample of size n=139. a. What is the mean of the distribution of sample means? μ¯x= _________________ b. What is the standard deviation of the distribution of sample means? (Report answer accurate to 2 decimal places.) σx¯=_______________ 2. A population of values has a normal distribution with μ=201.8μ=201.8 and σ=90.9σ=90.9. You intend...
leach My Notes 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 15 minutes. Consider 49 of the races. Let x = the average of the 49 races. a Part (a) Give the distribution of (Round your standard deviation to two decimal places.) Part (b) Find the probability that the runner will average between 146 and 149 minutes in these 49 marathons....
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...
please help
The cost of unleaded gasoline in the Bay Area once followed an unknown distribution with a mean of $2.39 and a standard deviation of $0.04. Steen gas stations from the Bay Area redomly chosen. We are interested in the average stof gasoline for the 16 gas stations What is the probability that the average price for 16 gas stations is over $2.43 The probability is almost zero 0.0668 0.1587 0.8413 The probability is almost one.
The cost of unleaded gasoline in the Bay Area once followed an unknown distribution with a mean of $4.59 and a standard deviation of $0.10. Sbuteen gas stations from the Bay Area are randomly chosen. We are interested in the average cost of gasoline for the 16 gas stations. (1) The distribution to use for the average cost of gasoline for the 16 gas stations is: OAX - N(4.59, 0.1 OB X-(4.59, 0.1 OCX - N(4.59,0.1) OD:X-N(4.59, QUESTION 8 (2)...
QUESTION 7 5 points Save Answer Use the following to answer the next three exercises: The cost of unleaded gasoline in the Bay Area once followed an unknown distribution with a mean of $4.59 and a standard deviation of $0.10. Sixteen gas stations from the Bay Area are randomly chosen. We are interested in the average cost of gasoline for the 16 gas stations. (1) The distribution to use for the average cost of gasoline for the 16 gas stations...
Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 248 feet and a standard deviation of 46 feet. We randomly sample 49 fly balls. Part(a) If X = average distance in feet for 49 fly balls, then give the distribution of X Round your standard deviation to two decimal places Part (b) What is the probability that the 49 balls traveled an average of less than 238 feet? (Round...
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