Question

At a large track meet, times in the 100-meter race follow a normal distribution with mean...

At a large track meet, times in the 100-meter race follow a normal distribution with mean 11.23 seconds and standard deviation 0.46 seconds. Times in the 200-meter race follow a normal distribution with mean 20.85 seconds and standard deviation 0.87 seconds. One runner had a time of 10.67 seconds in the 100-meter race. What must his 200-meter race time be in order for him to be at the same probability as the 100-meter race?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

thank you.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
James is on the track team and runs a 100-meter dash several times each practice. A...
James is on the track team and runs a 100-meter dash several times each practice. A random sample of 20 times (in seconds) from those practices gives a sample mean of 11.395 with a standard deviation of 0.5021. What is a 95% confidence interval to estimate his true mean 100-meter dash time?
6. The following are 100-meter running times (in seconds) for the college track team: 9.92 9.97...
6. The following are 100-meter running times (in seconds) for the college track team: 9.92 9.97 9.99 10.01 10.06 10.07 10.08 10.10 10.13 10.13 10.14 10.15 10.17 10.17 10.18 10.21 10.24 10.26 10.31 10.38 a. Find the mean, standard deviation and 5-number summary for the above sample. b. Is the sample approximately normal, right-skewed or left-skewed? Explain c. Use the 5-number summary data to find any outliers
Assume the commuting times of American workers follow a normal distribution with mean mu=23 minutes and...
Assume the commuting times of American workers follow a normal distribution with mean mu=23 minutes and standard deviation sigma=5 minutes. A random sample of 16 American workers is taken. What is the probability that the sample mean commuting time is greater than 25 minutes?
Let X model the racing times for local high school athletes in the 400 meter dash....
Let X model the racing times for local high school athletes in the 400 meter dash. Assume that X is normally distrubuted with a mean of 60 seconds, and a standard deviation of 4.7 secinds. Assuming your friens can run 400 meters in 63 secinds. What is the probability that a local high school athlete is faster by at least one second? What is the probabilty that the mean race time for a group of 8 track athletes exceeds 61...
12. In a recent race, the finish times formed a normal distribution with a mean of...
12. In a recent race, the finish times formed a normal distribution with a mean of 210 minutes and a standard deviation of 25 minutes.       a)Find the z-score of Jose, who finished in 190 minutes.       b)Find the z-score of Estella, who finished in 270 minutes       c) What is the probability that a racer finished in less than 180 minutes?       d)What is the probability a racer finished between 190 and 225 minutes?
Suppose the scores on an IQ test approximately follow a normal distribution with mean 100 and...
Suppose the scores on an IQ test approximately follow a normal distribution with mean 100 and standard deviation 12. Use the 68-95-99.7 Rule to determine approximately what percentage of the population will score between 100 and 124.
1. Scores on a standardized lesson are assumed to follow a normal distribution, with a mean...
1. Scores on a standardized lesson are assumed to follow a normal distribution, with a mean of 100 and a standard deviation of 32. Five tests are randomly selected. What is the mean test score? (? ) What is the standard error of the scores? ( ?) X XXn NOTE: The standard error is another name for the standard deviation of , that is, standard error = . X Mean = 100, standard error = 4.53 Mean = 100, standard...
Listed below are the winning times (in seconds) of women in the 100-meter dash for consecutive...
Listed below are the winning times (in seconds) of women in the 100-meter dash for consecutive summer Olympic games, listed in order by year. Assume that the times are sample data from a larger population. 11.07 11.08 11.06 10.97 10.54 10.82 10.94 10.75 10.93 a. Find the values of the indicated statistics. i. Mean ii. Median iii. Standard deviation iv. Variance v. Range b. What is the level of measurement of the data? c. Are the values discrete or continuous?...
The distribution of the commute times for the employees at a large company has mean 22.4...
The distribution of the commute times for the employees at a large company has mean 22.4 minutes and standard deviation 6.8 minutes. A random sample of n employees will be selected and their commute times will be recorded. What is true about the sampling distribution of the sample mean as n increases from 2 to 10 ? The mean increases, and the variance increases. A The mean increases, and the variance decreases. B The mean does not change, and the...
7. Starbucks Cappuccino times follow a Continuous or Uniform distribution: The time required to make Cappuccino...
7. Starbucks Cappuccino times follow a Continuous or Uniform distribution: The time required to make Cappuccino using whole milk is uniformly distributed between 25 and 35 seconds. Estimate the Population mean and standard deviation of Cappuccino times at Starbucks. Estimate the Probability that the Cappuccino will take less than 30 seconds. Estimate the Probability that the prepeartion time will be less than 35 seconds.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT