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WK 7: Hypothesis Testing a. The allowable concentration of acetone in drinking water is 0.05 mg/L. With 64 samples you measure an average of 0.045 mg/L with a sample standard deviation of 0.02 mg/L. Can you say at the 90% confidence level that the water meets an acceptable standard? How many samples would you need to meet the standard at 99% confidence assuming the standard deviation stays the same? b. There is a rumor that Fairway gets first choice and hence better produce than C-town. At Fairway you measure 40 navel oranges and find an average weight of 0.4 kg with a sample standard deviation of 0.08 kg. At C-town you measure 30 navel oranges and find an average weight of 0.37 kg with a sample standard deviation of 0.06 kg. Can you say at the 95% confidence level that the C-town oranges are smaller?

WK 7: Hypothesis Testing a. The allowable concentration of acetone in drinking water is 0.05 mg/L. With 64 samples you measure an average of 0.045 mg/L with a sample standard deviation of 0.02 mg/L. Can you say at the 90% confidence level that the water meets an acceptable standard? How many samples would you need to meet the standard at 99% confidence assuming the standard deviation stays the same? b. There is a rumor that Fairway gets first choice and hence better produce than C-town. At Fairway you measure 40 navel oranges and find an average weight of 0.4 kg with a sample standard deviation of 0.08 kg. At C-town you measure 30 navel oranges and find an average weight of 0.37 kg with a sample standard deviation of 0.06 kg. Can you say at the 95% confidence level that the C-town oranges are smaller?

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Please solve question C only explain if you can thank you 

HWK 7: Hypothesis Testing a. The allowable concentration of acetone in drinking water is 0.05 mg/L. With 64 samples you measure an average of 0.045 mg/L with a sample standard deviation of 0.02 mg/L. Can you say at the 90% confidence level that the water meets an acceptable standard? How many samples would you need to the same? meet the standard at 99% confidence assuming the standard deviation stays -6 3 b. There is a rumor that Fairway gets first choice and hence better produce than C-town. At Fairway you measure 40 navel oranges and find an average weight of 0.4 kg with a sample standard deviation of 0.08 kg. At C-town you measure 30 navel oranges and find an average weight of 0.37 kg with a sample standard deviation of 0.06 kg. Can you say at the 95% confidence level that the C-town oranges are smaller? c. Repeat the above analysis if both sample sizes are half as big. stopping_distance_....csv & 7 F7 0 PrtScn F8 8 Home F9 ( 9 R X 27 End F10 0 PgUp F11 - -S4 1 PgDn F12 +
Transcribed Image Text:HWK 7: Hypothesis Testing a. The allowable concentration of acetone in drinking water is 0.05 mg/L. With 64 samples you measure an average of 0.045 mg/L with a sample standard deviation of 0.02 mg/L. Can you say at the 90% confidence level that the water meets an acceptable standard? How many samples would you need to the same? meet the standard at 99% confidence assuming the standard deviation stays -6 3 b. There is a rumor that Fairway gets first choice and hence better produce than C-town. At Fairway you measure 40 navel oranges and find an average weight of 0.4 kg with a sample standard deviation of 0.08 kg. At C-town you measure 30 navel oranges and find an average weight of 0.37 kg with a sample standard deviation of 0.06 kg. Can you say at the 95% confidence level that the C-town oranges are smaller? c. Repeat the above analysis if both sample sizes are half as big. stopping_distance_....csv & 7 F7 0 PrtScn F8 8 Home F9 ( 9 R X 27 End F10 0 PgUp F11 - -S4 1 PgDn F12 +
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