Question

The average weight of 40 randomly selected minivans is 4150 pounds. The standard deviation of all...

The average weight of 40 randomly selected minivans is 4150 pounds. The standard deviation of all minivans is 480 pounds.

a)       Define the parameter of interest.

b)       Find the 88% confidence interval for the parameter. Check the required condition(s) to validate the interval. Interpret the interval in the context of the question.

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

Homework Answers

Answer #1

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
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...
The standard deviation of the weights of elephants is known to be approximately 15 pounds. We...
The standard deviation of the weights of elephants is known to be approximately 15 pounds. We wish to construct a 95% confidence interval for the mean weight of newborn elephant calves. Fifty newborn elephants are weighed. The sample mean is 244 pounds. The sample standard deviation is 11 pounds. Identify the following: x¯ = σ = n = In words, define the random variables X and X¯. Construct a 95% confidence interval for the population mean weight of newborn elephants....
5. A sample of 120 body builders have an average weight of of 278.20 pounds and...
5. A sample of 120 body builders have an average weight of of 278.20 pounds and a sample standard deviation of 12.62 pounds. Construct a 99% confidence interval estimate the mean of the weight of bodybuilders for the entire population. a) Find the margin of error, E b) What is the Confidence Interval? c) Interpret the confidence interval.
The length of a scarlet macaw is normally distributed with a standard deviation of 5.11 cm....
The length of a scarlet macaw is normally distributed with a standard deviation of 5.11 cm. An ornithologist is interested in the mean length of scarlet macaws. He randomly selects 77 scarlet macaws to study, and finds their average length to be 89.5 cm. a) Define the parameter of interest. b) Define the random variable of interest. c) Name the distribution used to construct confidence intervals. (Check the relevant criteria.) d) Construct a 90% confidence interval for the true mean...
A sample of 7 adult elephants has an average weight of 12,800 pounds. the standard deviation...
A sample of 7 adult elephants has an average weight of 12,800 pounds. the standard deviation for the sample was 21 pounds.find the 99% confidence interval of the population mean for the weight of adult elephants.assume the value is normally distributed. use a graphing calculator and round up answer to the nearest whole number.
The average weight of adult males is 184.5 pounds, with a standard deviation of 19 pounds...
The average weight of adult males is 184.5 pounds, with a standard deviation of 19 pounds and a normal distribution. Micah weighs 203.4 pounds. What is the standardized score for Micah's weight?
The average weight of an airline passenger’s suitcases is 45 pounds with a standard deviation of...
The average weight of an airline passenger’s suitcases is 45 pounds with a standard deviation of 2 pounds. If 16% of the suitcases are overweight, find the maximum weight allowed by the airline. Assume the variable is bell – shaped distributed. Hint: Sketch and label a normal model to help answer the question.
A rivet is to be inserted into a hole. If the standard deviation of hole diameter...
A rivet is to be inserted into a hole. If the standard deviation of hole diameter exceeds 0.02 mm, there is an unacceptably high probability that the rivet will not fit. A random sample of n = 15 parts is selected, and the hole diameter is measured. The sample standard deviation of the hole diameter measurements is s = 0.016mm. At α = 0.05 conduct a hypothesis test to investigate to indicate that the standard deviation of hole diameter exceeds...
Weights of wrestlers are normally distributed with an average weight 177 pounds and a standard deviation...
Weights of wrestlers are normally distributed with an average weight 177 pounds and a standard deviation of 35 pounds. An researcher gathers a group of 64 people to conduct a study. What is the probability that the average weight of the group will be less than 182 pounds?
1.) A randomly selected sample of 70 casino patrons has an average loss of $300 with...
1.) A randomly selected sample of 70 casino patrons has an average loss of $300 with a sample standard deviation of $100. Use this information to complete the following: a) Does the information above provide an estimate of a population mean or a population proportion? b) Provide a point estimate for the population mean loss of all casino patrons. c) Construct and interpret a 90% confidence interval for the parameter you selected in part (a). d) What is the margin...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT