Homework Answers
Refer Z-table to find the probability or use excel formula "=NORM.S.DIST(-0.17, TRUE)" to find the probability.
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need help Question 4 of 13, Step 1 of 1 correct An operation manager at an...
- Save & Exit Certify Lesson: 7.2 Central Limit Theorem with Me... KAYLA LOCKE Question 4...
- Save & Exit Certify Lesson: 7.2 Central Limit Theorem with Me... KAYLA LOCKE Question 4 of 13, Step 1 of 1 2/13 Correct An operation manager at an electronics company wants to test their amplifiers. The design engineer claims they have a mean output of 482 watts with a variance of 121 What is the probability that the mean amplifier output would be greater than 479.4 watts in a sample of 59 amplifiers if the claim is true? Round...
An operation manager at an electronics company wants to test their amplifiers. The design engineer claims...
An operation manager at an electronics company wants to test their amplifiers. The design engineer claims they have a mean output of 368368 watts with a standard deviation of 1212 watts. What is the probability that the mean amplifier output would be less than 365.6365.6 watts in a sample of 8484 amplifiers if the claim is true? Round your answer to four decimal places.
An operation manager at an electronic company wants to test their amplifiers. The design engineer claims...
An operation manager at an electronic company wants to test their amplifiers. The design engineer claims they have a mean output of 368 watts with a standard deviation of 12 watts. What is the probability that the mean amplifier output would differ from population mean by less than 3.8 watts in a sample of 84 amplifiers if the claim is true. Round answer to 4 decimal places
Question 4 of 4, Step 2 of 4 7/16 Correct The marketing manager of a firm...
Question 4 of 4, Step 2 of 4 7/16 Correct The marketing manager of a firm that produces laundry products decides to test market a new laundry product in each of the firm's two sales regions. He wants to determine whether there will be a difference in mean sales per market per month between the two regions. A random sample of 17 supermarkets from Region 1 had mean sales of 85.3 with a standard deviation of 5.1. A random sample...
Question 2 of 4 Step 1 of 5 00:55:26 An engineer designed a valve that will...
Question 2 of 4 Step 1 of 5 00:55:26 An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such that it would produce a mean pressure of 4.2 pounds/square inch. The valve was tested on 270 engines and the mean pressure was 43 pounds/square inch. Assume the variance is known to be 0.49. Is there evidence at the 0.1 level that the valve performs above the specifications? Step 1 of...
Question 5 of 15. Step 1 of 1 4/15 Correct Thompson and Thompson is a steel...
Question 5 of 15. Step 1 of 1 4/15 Correct Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 139 millimeters, and a standard deviation of 7 millimeters If a random sample of 38 steel bolts is selected, what is the probability that the sample mean would be less than 140.7 millimeters? Round your answer to four decimal places. Tables Keypad Answer How to enter your answer Submit Answer 2020 Hawkes...
AMY HAYDEN Question 10 of 13, Step 1 of 1 9/13 Correct The time spent waiting...
AMY HAYDEN Question 10 of 13, Step 1 of 1 9/13 Correct The time spent waiting in the line is approximately normally distributed. The mean waiting time is 6 minutes and the variance of the waiting time is 9. Find the probability that a person will wait for more than 9 minutes. Round your answer to four decimal places Answer Tables Keypad If you would like to look up the value in a table, select the table you want to...
Question 2 of 5, Step 1 of 4 4/20 Correct A state legislator wants to determine...
Question 2 of 5, Step 1 of 4 4/20 Correct A state legislator wants to determine whether his voters' performance rating (0 - 100) has changed from last year to this year. The following table shows the legislator's performance from the same ten randomly selected voters for last year and this year. Use this data to find the 98 % confidence interval for the true difference between the population means. Assume that the populations of voters' performance ratings are normally...
Question 2 of 4, Step 1 of 5 3/20 Correct 3 A technician compares repair costs...
Question 2 of 4, Step 1 of 5 3/20 Correct 3 A technician compares repair costs for two types of microwave ovens (type I and type II). He believes that the repair cost for type I ovens is greater than the repair cost for type Il ovens. A sample of 33 type I ovens has a mean repair cost of $89.32. The population standard deviation for the repair of type I ovens is known to be $24.88. A sample of...
this my question and i only need help with step 4,5,6,7,8 and thats it. Step 1...
this my question and i only need help with step 4,5,6,7,8 and
thats it.
Step 1 You work for Thunderduck Custom Tables Inc. This is the first month of operations. The company designs and manufactures specialty tables. Each table is specially customized for the customer. This month, you have been asked to develop and manufacture two new tables for customers. You will design and build the tables. This is a no nail, no screw, and no glue manufacturing (no indirect...
- Save & Exit Certify Lesson: 7.2 Central Limit Theorem with Me... KAYLA LOCKE Question 4 of 13, Step 1 of 1 2/13 Correct An operation manager at an electronics company wants to test their amplifiers. The design engineer claims they have a mean output of 482 watts with a variance of 121 What is the probability that the mean amplifier output would be greater than 479.4 watts in a sample of 59 amplifiers if the claim is true? Round...
Question 4 of 4, Step 2 of 4 7/16 Correct The marketing manager of a firm that produces laundry products decides to test market a new laundry product in each of the firm's two sales regions. He wants to determine whether there will be a difference in mean sales per market per month between the two regions. A random sample of 17 supermarkets from Region 1 had mean sales of 85.3 with a standard deviation of 5.1. A random sample...
Question 2 of 4 Step 1 of 5 00:55:26 An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such that it would produce a mean pressure of 4.2 pounds/square inch. The valve was tested on 270 engines and the mean pressure was 43 pounds/square inch. Assume the variance is known to be 0.49. Is there evidence at the 0.1 level that the valve performs above the specifications? Step 1 of...
Question 5 of 15. Step 1 of 1 4/15 Correct Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 139 millimeters, and a standard deviation of 7 millimeters If a random sample of 38 steel bolts is selected, what is the probability that the sample mean would be less than 140.7 millimeters? Round your answer to four decimal places. Tables Keypad Answer How to enter your answer Submit Answer 2020 Hawkes...
AMY HAYDEN Question 10 of 13, Step 1 of 1 9/13 Correct The time spent waiting in the line is approximately normally distributed. The mean waiting time is 6 minutes and the variance of the waiting time is 9. Find the probability that a person will wait for more than 9 minutes. Round your answer to four decimal places Answer Tables Keypad If you would like to look up the value in a table, select the table you want to...
Question 2 of 5, Step 1 of 4 4/20 Correct A state legislator wants to determine whether his voters' performance rating (0 - 100) has changed from last year to this year. The following table shows the legislator's performance from the same ten randomly selected voters for last year and this year. Use this data to find the 98 % confidence interval for the true difference between the population means. Assume that the populations of voters' performance ratings are normally...
Question 2 of 4, Step 1 of 5 3/20 Correct 3 A technician compares repair costs for two types of microwave ovens (type I and type II). He believes that the repair cost for type I ovens is greater than the repair cost for type Il ovens. A sample of 33 type I ovens has a mean repair cost of $89.32. The population standard deviation for the repair of type I ovens is known to be $24.88. A sample of...
this my question and i only need help with step 4,5,6,7,8 and
thats it.
Step 1 You work for Thunderduck Custom Tables Inc. This is the first month of operations. The company designs and manufactures specialty tables. Each table is specially customized for the customer. This month, you have been asked to develop and manufacture two new tables for customers. You will design and build the tables. This is a no nail, no screw, and no glue manufacturing (no indirect...
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