To be submitted: A factory manufactures steel rods. The rods are supposed to have a mean length of 25 cm. If there is evidence at a = 0.05 that the mean length for all rods is different from 25 cm the factory will be shut down and a costly maintenance procedure will ensue. If the mean length is different from 25 cm their customers will be unhappy and not use the company anymore. A random sample of 150 rods is taken. The lengths of those 150 rods are in the file rodsF20.xlsx. 1. Make a frequency table and histogram for the data with the first class of (23, 23.5) 2. Run a hypothesis test that tests the claim that the mean length for all rods is different from 25cm. 3. State your conclusion in terms of the claim and whether you would recommend shutting down the factory. 4. State what a Type l error is in context. 5. What are the likely consequences of making a Type l error? 6. State what a Type Il error is in context. 7. What are the likely consequences of making a Type Il error? 8. Find and interpret a 95% confidence interval for the mean length of all rods. 9. Based on the CI would you recommend shutting down the factory. Justify. 10. Compare your conclusions in 3 and 9. Remember the goal of any lab is that you learn by doing! Save you file often and do not delete any datal
To be submitted: A factory manufactures steel rods. The rods are supposed to have a mean length of 25 cm. If there is evidence at a = 0.05 that the mean length for all rods is different from 25 cm the factory will be shut down and a costly maintenance procedure will ensue. If the mean length is different from 25 cm their customers will be unhappy and not use the company anymore. A random sample of 150 rods is taken. The lengths of those 150 rods are in the file rodsF20.xlsx. 1. Make a frequency table and histogram for the data with the first class of (23, 23.5) 2. Run a hypothesis test that tests the claim that the mean length for all rods is different from 25cm. 3. State your conclusion in terms of the claim and whether you would recommend shutting down the factory. 4. State what a Type l error is in context. 5. What are the likely consequences of making a Type l error? 6. State what a Type Il error is in context. 7. What are the likely consequences of making a Type Il error? 8. Find and interpret a 95% confidence interval for the mean length of all rods. 9. Based on the CI would you recommend shutting down the factory. Justify. 10. Compare your conclusions in 3 and 9. Remember the goal of any lab is that you learn by doing! Save you file often and do not delete any datal
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
Related questions
Topic Video
Question
Complete Subparts 7-10!
and thank you in advance!
Here's the Data:
Rod Length |
25.42 |
25.89 |
25.21 |
24.32 |
24.70 |
24.15 |
24.49 |
23.29 |
24.13 |
25.71 |
24.65 |
23.20 |
24.80 |
25.95 |
23.47 |
25.80 |
24.24 |
25.23 |
25.16 |
25.22 |
24.59 |
24.53 |
24.70 |
24.81 |
24.40 |
23.45 |
25.28 |
24.03 |
24.34 |
25.13 |
26.08 |
25.74 |
23.71 |
24.18 |
25.11 |
26.29 |
25.61 |
25.47 |
24.36 |
24.59 |
24.24 |
24.94 |
25.94 |
24.13 |
26.12 |
25.16 |
24.83 |
23.47 |
24.96 |
25.34 |
26.00 |
25.19 |
25.61 |
24.66 |
24.48 |
24.64 |
25.97 |
24.40 |
24.55 |
24.13 |
24.83 |
25.60 |
24.63 |
26.00 |
23.56 |
24.56 |
24.38 |
25.12 |
24.90 |
25.83 |
25.44 |
24.98 |
24.81 |
25.09 |
24.25 |
24.00 |
25.90 |
25.46 |
24.30 |
25.22 |
23.32 |
24.58 |
25.60 |
24.71 |
25.85 |
23.22 |
25.82 |
24.98 |
24.95 |
24.23 |
24.69 |
24.44 |
24.05 |
25.12 |
25.21 |
24.98 |
24.21 |
25.89 |
25.23 |
24.89 |
24.91 |
25.76 |
25.61 |
24.84 |
24.83 |
24.16 |
25.70 |
24.56 |
24.84 |
24.25 |
25.45 |
24.15 |
25.00 |
25.23 |
26.00 |
25.22 |
24.06 |
24.94 |
24.79 |
25.04 |
25.74 |
24.91 |
25.66 |
24.57 |
26.73 |
23.22 |
25.85 |
24.29 |
24.68 |
25.29 |
25.71 |
24.63 |
24.43 |
25.96 |
25.52 |
24.71 |
24.36 |
25.11 |
24.45 |
25.87 |
24.72 |
24.23 |
24.74 |
25.59 |
25.45 |
24.39 |
25.46 |
24.07 |
25.39 |
25.50 |
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