Question

Your lumber company has bought a machine that automatically cuts lumber. The seller of the machine...

Your lumber company has bought a machine that automatically cuts lumber. The seller of the machine claims that the machine cuts lumber to a mean length of 7 feet ​(84 ​inches) with a standard deviation of 0.6 inch. Assume the lengths are normally distributed. You randomly select 42 boards and find that the mean length is 84.24 inches. Complete parts​ (a) through​ (c).

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

Homework Answers

Answer #1

Here I wrote the answer as per my Assumption as the options were not given by you in the problem.. 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
Your lumber company has bought a machine that automatically cuts lumber. The seller of the machine...
Your lumber company has bought a machine that automatically cuts lumber. The seller of the machine claims that the machine cuts lumber to a mean length of 7 feet ​(84 ​inches) with a standard deviation of 0.6 inch. Assume the lengths are normally distributed. You randomly select 45 boards and find that the mean length is 84.26 inches. Complete parts​ (a) through​ (c). a) Assuming the​ seller's claim is​ correct, what is the probability that the mean of the sample...
The lengths of lumber a machine cuts are normally distributed with a mean of 105 inches...
The lengths of lumber a machine cuts are normally distributed with a mean of 105 inches and a standard deviation of 0.5 inch. ​(a) What is the probability that a randomly selected board cut by the machine has a length greater than 105.14 ​inches? ​(b) A sample of 42 boards is randomly selected. What is the probability that their mean length is greater than 105.14 ​inches?
The lengths of lumber a machine cuts are normally distributed with a mean of 9595 inches...
The lengths of lumber a machine cuts are normally distributed with a mean of 9595 inches and a standard deviation of 0.70.7 inch. ​(a) What is the probability that a randomly selected board cut by the machine has a length greater than 95.3295.32 ​inches? ​(b) A sample of 4545 boards is randomly selected. What is the probability that their mean length is greater than 95.3295.32 ​inches?
A lumber cutting machine cuts lumber to a mean length of 231.0​cm, with a standard deviation...
A lumber cutting machine cuts lumber to a mean length of 231.0​cm, with a standard deviation of 3.4cm. The lengths are normally distributed. What is the shortest length that still places a piece of lumber in the longest 35% of​ lengths? Show your calculation and the answer rounded to the nearest hundredth of a cm.
1) A company produces steel rods. The lengths of the steel rods are normally distributed with...
1) A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 183.4-cm and a standard deviation of 1.3-cm. Find the probability that the length of a randomly selected steel rod is between 179.9-cm and 180.3-cm. P(179.9<x<180.3)=P(179.9<x<180.3)= 2) A manufacturer knows that their items have a normally distributed length, with a mean of 6.3 inches, and standard deviation of 0.6 inches. If 9 items are chosen at random, what is the probability that...
A mill cuts pieces of steel into parts that will later be used as the frame...
A mill cuts pieces of steel into parts that will later be used as the frame for front seats in an automotive plant. The steel is cut with a diamond​ saw, and the resulting parts must be within plus or minus±0.005 inch of the length specified by the automobile company. The data are shown in the accompanying table. The measurement reported is the​ difference, in​ inches, between the actual length of the steel part and the specified length of the...
Lazurus Steel Corporation produces iron rods that are supposed to be 36 inches long. The machine...
Lazurus Steel Corporation produces iron rods that are supposed to be 36 inches long. The machine that makes these rods does not produce each rod exactly 36 inches long. The lengths of the rods are normally distributed and vary slightly. It is known that when the machine is working properly, the mean length of the rods is 36 inches. The standard deviation of the lengths of all rods produced on this machine is always equal to 0.035 inch. The quality...
Lazurus Steel Corporation produces iron rods that are supposed to be 36 inches long. The machine...
Lazurus Steel Corporation produces iron rods that are supposed to be 36 inches long. The machine that makes these rods does not produce each rod exactly 36 inches long. The lengths of the rods are normally distributed and vary slightly. It is known that when the machine is working properly, the mean length of the rods is 36 inches. The standard deviation of the lengths of all rods produced on this machine is always equal to 0.035 inch. The quality...
The length of timber cuts are normally distributed with a mean of 95 inches and a...
The length of timber cuts are normally distributed with a mean of 95 inches and a standard deviation of 0.52 inches. In a random sample of 30 boards, what is the probability that the mean of the sample will be between 94.7 inches and 95.3 inches? 0.002 0.950 0.436 0.998 Flag this Question Question 182 pts The Dow Jones Industrial Average has had a mean gain of 432 pear year with a standard deviation of 722. A random sample of...
The Gidget Company makes widgets. If the production process is working​ properly, it turns out that...
The Gidget Company makes widgets. If the production process is working​ properly, it turns out that the widgets are normally distributed with a mean length of at least 3.4 feet. Larger widgets can be used or altered but shorter widgets must be scrapped. You select a sample of 25 ​widgets, and the mean length is 3.35 feet and the sample standard deviation is 0.24 foot. Do you need to adjust the production​ equipment? Complete parts​ (a) through​ (d). If you...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT