A company makes windows for use in homes and commercial buildings. The standards for glass thickness...
A company makes windows for use in homes and commercial buildings. The standards for glass thickness call for the glass to average 0.4000 inch with a standard deviation equal to 0.0500 inch. Suppose a random sample of n=48 windows yields a sample mean of 0.4190inch. Complete parts a and b below.
a. P(xbar more than 0.419)= 0.0043
b. . Based on your answer to part a, what would you conclude about the population of windows? Is it meeting the standards? (A result is unusual if it has a probability less than 0.05.)
The population of windows (is or is not) meeting the standards, because a sample of 48 windows with a sample mean of 0.4190 (would not be unusual or would be usual) inch if the population actually had a mean of 0.4000 inch and a standard deviation of 0.0500 inch.
I'm not sure the answers for b. Thanks!
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A company makes windows for use in homes and commercial
buildings. The standards for glass thickness...
A company makes windows for use in homes and commercial buildings. The standards for glass thickness...
A company makes windows for use in homes and commercial buildings. The standards for glass thickness call for the glass to average 0.500 inch with a standard deviation equal to 0.045 inch. Suppose a random sample of n=51 windows yields a sample mean of 0.519 inch. What is the probability of getting a sample mean greater or equal to 0.519, if the windows meet the standards? (Round to four decimal places as needed.)
A normally distributed population has a mean of 500 and a standard deviation of 80. a....
A normally distributed population has a mean of 500 and a standard deviation of 80. a. Determine the probability that a random sample of size 25 selected from this population will have a sample mean less than 463 . b. Determine the probability that a random sample of size 16 selected from the population will have a sample mean greater than or equal to 538. A company makes windows for use in homes and commercial buildings. The standards for glass...
Question 16 1 pts A population has a mean of 121 If a random sample of...
Question 16 1 pts A population has a mean of 121 If a random sample of 8 items from the population results in the following sampled values what it the sampling error for the sample? 118 121 97 140 141 127 138 124 Question 17 1 pts A company makes windows for use in homes and commercial buildings. The standards for glass thickness call for the glass to average 0.500 inch with a standard deviation equal to 0.045 inch. Suppose...
During the manufacturing of commercial windows, hot steel ingots are passed though a rolling process and...
During the manufacturing of commercial windows, hot steel ingots are passed though a rolling process and flattened to a prescribed thickness. When the manufacturing process is working properly the ingots should have a mean thickness of 0.75 inches. A random sample of 40 ingots is taken and the mean was found to be 0.725 inches with a standard deviation of 0.092. a. Find a 95% confidence interval for the population mean thickness. b. Find the error bound. c. Interpret the...
please let me know and way to answer l. Armbrister Windows makes windows which have a...
please let me know and way to answer
l. Armbrister Windows makes windows which have a production standard of an average of 0.375 inches thick with a standard deviation of 0.050 inches. A random sample of 64 windows yields an average of 0.382 inches. Calculate the probability of obtaining a random sample of 64 windows with an average of at least 0.382 inches. 2. The time it takes a mechanic to replace a brake pad is known to be normally...
summatize the following info and break them into differeng key points. write them in yojr own...
summatize the following info and break them into differeng key points. write them in yojr own words
apartus
6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
A company makes windows for use in homes and commercial buildings. The standards for glass thickness call for the glass to average 0.500 inch with a standard deviation equal to 0.045 inch. Suppose a random sample of n=51 windows yields a sample mean of 0.519 inch. What is the probability of getting a sample mean greater or equal to 0.519, if the windows meet the standards? (Round to four decimal places as needed.)
Question 16 1 pts A population has a mean of 121 If a random sample of 8 items from the population results in the following sampled values what it the sampling error for the sample? 118 121 97 140 141 127 138 124 Question 17 1 pts A company makes windows for use in homes and commercial buildings. The standards for glass thickness call for the glass to average 0.500 inch with a standard deviation equal to 0.045 inch. Suppose...
please let me know and way to answer
l. Armbrister Windows makes windows which have a production standard of an average of 0.375 inches thick with a standard deviation of 0.050 inches. A random sample of 64 windows yields an average of 0.382 inches. Calculate the probability of obtaining a random sample of 64 windows with an average of at least 0.382 inches. 2. The time it takes a mechanic to replace a brake pad is known to be normally...
summatize the following info and break them into differeng key points. write them in yojr own words
apartus
6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
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