ZuoTi.Pro
Question

A random sample of vehicle mileage expectancies has a sample mean of x¯=169,200 miles and sample...

A random sample of vehicle mileage expectancies has a sample mean of x¯=169,200 miles and sample standard deviation of s=19,400 miles. Use the Empirical Rule to estimate the percentage of vehicle mileage expectancies that are more than 188,600 miles.

Round your answer to the nearest whole number (percent).

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Z = (X - xbar) / s = (188600 - 169200)/19400 = 1

P(X bar > 188600) = P(Z > 1) = (100 - 68) / 2 = 16%

0 0
Add a comment
Know the answer?
Add Answer to:
A random sample of vehicle mileage expectancies has a sample mean of x¯=169,200 miles and sample...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • A random sample of small business stock prices has a sample mean of X = $54...

    A random sample of small business stock prices has a sample mean of X = $54 82 and sample standard deviation of S = $8.95. Use the emperical rule to estimate the percentage of small business stock prices that are more than $81.67. round your answers to the nearest hundreth

  • a certain car model has a mean gas mileage of 34 Miles per gallon (mpg) with...

    a certain car model has a mean gas mileage of 34 Miles per gallon (mpg) with a population standard deviation for. A pizza delivery company buys a sample of 54 of these cars. What is the probability that the average mileage of the fleet is greater than 33.7 MPG? Question 14 (3 points) A certain car model has a mean gas mileage of 34 miles per gallon (mpg) with a population standard deviation 4. A pizza delivery company buys a...

  • The mean value of land and buildings per acre from a sample of farms is ​$1200...

    The mean value of land and buildings per acre from a sample of farms is ​$1200 with a standard deviation of ​$200 The data set has a​ bell-shaped distribution. Assume the number of farms in the sample is 79 ​(a) Use the empirical rule to estimate the number of farms whose land and building values per acre are between ​$1000 and ​$1400   nothing farms ​(Round to the nearest whole number as​ needed.)

  • The mean value of land and buildings per acre from a sample of farms is ​$1800​,...

    The mean value of land and buildings per acre from a sample of farms is ​$1800​, with a standard deviation of ​$300. The data set has a​ bell-shaped distribution. Assume the number of farms in the sample is 77. ​(a) Use the empirical rule to estimate the number of farms whose land and building values per acre are between ​$1200 and ​$2400. nothing farms ​(Round to the nearest whole number as​ needed.)

  • Suppose100 geology students measure the mass of an ore sample. Due to human error and limitations...

    Suppose100 geology students measure the mass of an ore sample. Due to human error and limitations in the reliability of the​ balance, not all the readings are equal. The results are found to closely approximate a normal​ curve, with mean 81 g and standard deviation 1 g. Use the symmetry of the normal curve and the empirical rule as needed to estimate the number of students reporting readings more than 81 g Round to the nearest whole number if needed

  • College tuition: a simple random sample of 35 colleges and universities in the united states has...

    College tuition: a simple random sample of 35 colleges and universities in the united states has a mean tuition of $19,400 with a standard deviation of $10,700. Construct a 95% confidence interval for the mean tuition for all colleges and universities in the United States. round the answers to the nearest whole number. A 95% confidence interval for the mean tuition for all colleges and universities is __________________< mean < _____________________

  • Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of...

    Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 7171 miles per​ hour, with a standard deviation of 33 miles per hour. Estimate the percent of vehicles whose speeds are between 6868 miles per hour and 7474 miles per hour.​ (Assume the data set has a​ bell-shaped distribution.)

  • Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of...

    Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 67 miles per​ hour, with a standard deviation of 3 miles per hour. Estimate the percent of vehicles whose speeds are between 61 miles per hour and 73 miles per hour.​ (Assume the data set has a​ bell-shaped distribution.)

  • The operation manager at a tire manufacturing company believes that the mean mileage of a tire...

    The operation manager at a tire manufacturing company believes that the mean mileage of a tire is 37,014 miles, with a standard deviation of of4617 miles. What is the probability that the sample mean would be less than 36,435 miles in a sample of 56 tires if the manager is correct? Round your answer to four decimal places.

  • Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of...

    Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 65miles per​ hour, with a standard deviation of 3 miles per hour. Estimate the percent of vehicles whose speeds are between 56 miles per hour and 74 miles per hour. (Assume the data set has a​ bell-shaped distribution.)

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT