ZuoTi.Pro
Question

A bolt manufacturer is very concerned about the consistency with which his machines produce bolts. The...

A bolt manufacturer is very concerned about the consistency with which his machines produce bolts. The bolts should be 0.270.27 centimeters in diameter. The variance of the bolts should be 0.0150.015. A random sample of 1919 bolts has an average diameter of 0.26cm0.26⁢cm with a standard deviation of 0.06030.0603. Can the manufacturer conclude that the bolts vary by less than the required variance at α=0.01α=0.01 level? Step 3 of 5: Determine the value of the test statistic. Round your answer to three decimal places.

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

Rate me,if it helps you

ỢC (G-ols) .363

0 0
Add a comment
Know the answer?
Add Answer to:
A bolt manufacturer is very concerned about the consistency with which his machines produce bolts. The...
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 bolt manufacturer is very concerned about the consistency with which his machines produce bolts. The...

    A bolt manufacturer is very concerned about the consistency with which his machines produce bolts. The bolts should be 0.210.21 centimeters in diameter. The variance of the bolts should be 0.0250.025. A random sample of 2525 bolts has an average diameter of 0.2cm0.2⁢cm with a standard deviation of 0.05450.0545. Can the manufacturer conclude that the bolts vary from the required variance at α=0.05α=0.05 level? Step 1 of 5: State the hypotheses in terms of the standard deviation. Round the standard...

  • JUSTIN SHORT Question 6 of 13 Step 1 of S 01:58:05 A bolt manufacturer is very...

    JUSTIN SHORT Question 6 of 13 Step 1 of S 01:58:05 A bolt manufacturer is very concerned about the consistency with which his machines produce bolts. The bolts should be 0.24 centimeters in diameter. The variance of the bolts should be 0.015. A random sample of 12 bolts has an average diameter of 0.23 cm with a standard deviation of 0.0642. Can the manufacturer conclude that the bolts vary by less than the required variance at a = 0.05 level?...

  • A jar manufacturer is very concerned about the consistency of the machines that produce jars and...

    A jar manufacturer is very concerned about the consistency of the machines that produce jars and believes that the jars produced by machine A have a different variance in diameter than the variance in diameter from machine B. The sample variance of a sample of 6 jars from machine A is 0.0264. The sample variance of a sample of 5 jars from machine B is 0.0325. Test the claim using a 0.1 level of significance. Let σ21 represent the population...

  • A jar manufacturer is very concerned about the consistency of the diameters of jars produced by...

    A jar manufacturer is very concerned about the consistency of the diameters of jars produced by his machines and believes that the jars produced by machine "A" have a different variance in diameter than the variance in diameter from machine "B". A sample of 18 jars from machine "A" has the sample variance of 0.0494. A sample of 2 jars from machine "B" has the sample variance of 0.0424. Construct the 95% confidence interval for the ratio of the population...

  • The target diameter of bolts from a production line is 12mm. Historically the bolt diameters are...

    The target diameter of bolts from a production line is 12mm. Historically the bolt diameters are normally distributed with a standard deviation of 0.1mm. To monitor this process periodically an engineer takes a random sample of 5 measurements. Let µ be the true average bolt diameter. The rejection region is: Find the minimum value of c that yields a test with significance 0.01? zα 1.282 1.645 1.960 2.326 2.576 3.090 α(tail area) 0.1 0.05 0.025 0.01 0.005 0.001 %ile 90...

  • The target diameter of bolts from a production line is 8mm. Historically the bolt diameters are...

    The target diameter of bolts from a production line is 8mm. Historically the bolt diameters are normally distributed with a standard deviation of 0.05mm. To monitor this process periodically an engineer takes a random sample of 4 measurements. Let µ be the true average bolt diameter. The rejection region is:    Find the minimum value of c that yields a test with significance 0.05? zα 1.282 1.645 1.960 2.326 2.576 3.090 α(tail area) 0.1 0.05 0.025 0.01 0.005 0.001 %ile...

  • The target diameter of bolts from a production line is 10mm. Historically the bolt diameters are...

    The target diameter of bolts from a production line is 10mm. Historically the bolt diameters are normally distributed with a standard deviation of 0.15mm. To monitor this process periodically an engineer takes a random sample of 6 measurements. Let µ be the true average bolt diameter. The rejection region is:    Find the minimum value of c that yields a test with significance 0.01? zα 1.282 1.645 1.960 2.326 2.576 3.090 α(tail area) 0.1 0.05 0.025 0.01 0.005 0.001 %ile...

  • A fashion designer wants to know how many new dresses women buy each year. A sample...

    A fashion designer wants to know how many new dresses women buy each year. A sample of 523 women was taken to study their purchasing habits. Construct the 95 % confidence interval for the mean number of dresses purchased each year if the sample mean was found to be 7.3. Assume that the population standard deviation is 1.4. Round your answers to one decimal place. Answer/How to Enter) 4 Points Tables Keypad Lower endpoint Upper endpoint: here to search A...

  • A manufacturer of hard safety hats for construction workers is concerned about the mean and the...

    A manufacturer of hard safety hats for construction workers is concerned about the mean and the variation of the forces helmets transmit to wearers when subjected to a standard external force. The manufacturer desires the mean force transmitted by helmets to be 800 pounds (or less), well under the legal 1,000-pound limit, and σ to be less than 40. A random sample of n = 45 helmets was tested, and the sample mean and variance were found to be equal...

  • An investor wants to invest his money in a fund which has maintained a steady value....

    An investor wants to invest his money in a fund which has maintained a steady value. A fund manager claims that one of his bond funds has maintained an average price of $11.00 with a variance of 0.25. In order to find out if the fund manager's claim is true, the investor samples the prices from 23 random days and finds a standard deviation of 0.4935 in the price. Can the investor conclude that the variance of the share price...

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