Question

The San Francisco 49'ers are the beefiest team in the NFL with an average weight of...

The San Francisco 49'ers are the beefiest team in the NFL with an average weight of 250 pounds and a standard deviation of 30 pounds. There are 55 players on the 49'ers. The 95% confidence interval (in pounds) for the weight of the 49'ers is approximately:

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

Homework Answers

Answer #1
  • The 95% confidence interval (in pounds) for the weight of the 49'ers is approximately: (242.072 , 257.928).
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
Suppose we are interested in analyzing the weights of NFL players. We know that on average,...
Suppose we are interested in analyzing the weights of NFL players. We know that on average, NFL players weigh 247 pounds with a population standard deviation of 47 pounds. Suppose we take a sample of 30 new players and we find that the average weight from that sample is 237 pounds. We are interested in seeing if the weight of NFL players is decreasing What is the standard error? What is the margin of error at 90% confidence? Using my...
Assume that the average weight of an NFL player is 245.7 pounds with a standard deviation...
Assume that the average weight of an NFL player is 245.7 pounds with a standard deviation of 34.5 pounds, but the probability distribution is unknown. a. if a random sample of 32 NFL players is selected, what is the probabilty that the average weight of the sample sill be less than 234 pounds? b. If a random sample of 32 NFL players is selected, what is the probability that the average weight of the sample is between 248 and 254...
Suppose we are interested in analyzing the weights of NFL players. We know that on average,...
Suppose we are interested in analyzing the weights of NFL players. We know that on average, NFL players weigh 247 pounds with a population standard deviation of 47 pounds. Suppose we take a sample of 30 new players and we find that the average weight from that sample is 237 pounds. We are interested in seeing if the weight of NFL players is decreasing If I wanted to control my margin of error and set it to 5 at 90%...
In a random sample of five airlines, the round trip fare from Ontario to San Francisco...
In a random sample of five airlines, the round trip fare from Ontario to San Francisco is found to be $211, $241, $277, $299, and $322. Assume that these airfares are normally distributed with a standard deviation of $50 dollars. a. find the sample mean. b. construct a 90% confidence interval for the sample mean. c. construct a 95% confidence interval for the sample mean.
3. In a random sample of 80 NFL games, the home team scored an average of...
3. In a random sample of 80 NFL games, the home team scored an average of 25.16 points with standard deviation 10.14. In a separate sample of 78 different games, the away team scored an average of 21.75 points with a standard deviation of 10.33 points. Find a 90% confidence interval for the difference in population mean points scored by home and away home. Round all calculations to three decimal points. a. Explain why the sample sizes are large enough....
One factor in rating a National Hockey League team is the mean weight of its players....
One factor in rating a National Hockey League team is the mean weight of its players. A random sample of players from the Detroit Red Wings was obtained. The weight (in pounds) of each player was carefully measured, and the resulting data have a sample size of 15 with a sample mean of 209 pounds and a sample standard deviation of 11.1 pounds. Assume that the distribution of the weights is normal. a. Find the 95.5% confidence interval for the...
Suppose the weight of linebackers in the National Football League (NFL) is normally distributed with a...
Suppose the weight of linebackers in the National Football League (NFL) is normally distributed with a mean of 246 pounds and a standard deviation of 5.1 pounds. a. What is the probability that a randomly selected NFL linebacker will weight less than 250 pounds? Round your z value(s) to two decimal places. Do not round any other intermediate calculations. Round your answer to four decimal places. Probability = ? b. What is the probability that a randomly selected NFL linebacker...
Suppose that the weights of professional baseball players are approximately normally distributed, with a mean of...
Suppose that the weights of professional baseball players are approximately normally distributed, with a mean of 207 pounds and standard deviation of 24 pounds. a. What proportion of players weigh between 200 and 250 pounds? b. What is the probability that the mean weight of a team of 25 players will be more than 215 pounds?
A researcher wished to compare the average daily hotel room rates between San Francisco and Los...
A researcher wished to compare the average daily hotel room rates between San Francisco and Los Angeles. The researcher obtained an SRS of 15 hotels in downtown San Francisco and found the sample mean x1=$156 , with a standard deviation s1= $15 . The researcher also obtained an independent SRS of 10 hotels in downtown Los Angeles and found the sample mean x2= $143, with a standard deviation s2=$10. Let 1 and 2 represent the mean cost of the populations...
The mean weight of the 45 members of a football team is 215 pounds. If none...
The mean weight of the 45 members of a football team is 215 pounds. If none of the players weighs less than 170 pounds, at most how many of them can weigh 250 pounds or more?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT