Question
In: Math
The mean finish time for a yearly amateur auto race was 187.22 minutes with a standard...
The mean finish time for a yearly amateur auto race was 187.22 minutes with a standard deviation of 0.377 minute. The winning car, driven by Todd. Todd, finished in 186.63 minutes. The previous year's race had a mean finishing time of 110.4 with a standard deviation of 0.112 minute. The winning car that year, driven by Karen, finished in 110.19 minutes. Find their respective z-scores. Who had the more convincing victory?
Solutions
milcah answered 9 months agoRelated Solutions
If the average time to finish an IQ test is 85 minutes with standard deviation of...
If
the average time to finish an IQ test is 85 minutes with standard
deviation of 17 minutes and assuming the data are normally
distributed,
1. what percentage of test takers finish less than 117
minutes?
2. what percentage of test takers finishes between one hour to
hour and half?
3. find the time that separates the slowest 15% who finish the
test?
4. find the time that separates the fastest 5% who finish the
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The average time students need to finish a particular test is 72 minutes with a standard...
The average time students need to
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If the professor wants 95% of students to have sufficient time
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What is the probability that a group of 20 students will take
on...
In a recent race, with mean 210 min, and standard deviation 25 min, the finish times formed a normal distribution:
In a recent race, with mean 210 min, and standard deviation 25 min, the finish times formed a normal distribution:
Find the z-score of Jose, who finished in 190 minutes.
Find the z-score of Maria, who finished in 270 minutes.
What is the probability that a racer would finish the race in less than 180 minutes?
What is the probability that a racer would finish the race between 190 and 225 minutes?
Suppose the mean wait time for a bus is 30 minutes and the standard deviation is...
Suppose the mean wait time for a bus is 30 minutes and the
standard deviation is 10 minutes. Take a sample of size n =
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Find the probability that the sample mean wait time is more than
31 minutes.
Suppose the mean wait time for a bus is 30 minutes and the standard deviation is...
Suppose the mean wait time for a bus is 30 minutes and the
standard deviation is 10 minutes. Take a sample of size n =
100.
Find the 95th percentile for the sample mean wait time.
Suppose the mean wait time for a bus is 30 minutes and the standard deviation is...
Suppose the mean wait time for a bus is 30 minutes and the
standard deviation is 10 minutes. Take a sample of size n =
100.
Find the probability that the sample mean wait time is between
29 minutes and 31 minutes.
2 runners started a race at the exact same time and tie at the finish. Which...
2 runners started a race at the exact same time and tie at the
finish. Which single answer has to be true?
A) The two had the same speed, but not exactly at the same
time.
B) The two had exactly the same speed, at exactly the same time,
at one point in the run.
C) Their MPH at the end was exactly the same.
D) The two were not tied at one point during the run.
E) None are...
16) The mean time spent solving this problem is 4.25 minutes with a standard deviation of...
16) The mean time spent solving this problem is 4.25 minutes
with a standard deviation of 1.7 minutes. Find the probability a
sample of 32 test takers spends a mean more than 5 minutes on this
problem.
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The standard deviation is 3.67 minutes. Find the probability a
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18. 27% of all women’s hair has split...
The mean wait time at Social Security Offices is 25 minutes with a standard deviation of...
The mean wait time at Social Security Offices is 25 minutes with
a standard deviation of 11 minutes. Use this information to answer
the following questions:
A.
If you randomly select 40 people what is the probability that their
average wait time will be more than 27 minutes?
B.
If you randomly select 75 people what is the probability that their
average wait time will be between 23 and 26 minutes?
C.
If you randomly select 100 people what is...
The mean wait time at Social Security Offices is 25 minutes with a standard deviation of...
The mean wait time at Social Security Offices is 25 minutes with
a standard deviation of 11 minutes. Use this information to answer
the following questions:
A.
If you randomly select 40 people what is the probability that their
average wait time will be more than 27 minutes?
B.
If you randomly select 75 people what is the probability that their
average wait time will be between 23 and 26 minutes?
C.
If you randomly select 100 people what is...
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