1. Listed below are weights (grams) from a simple random sample of "wheat" pennies. U.S. Mint specifications now require a mean of2.5 g for weights of pennies. Use a 0.10 significance level to test the claim that wheat pennies are manufactured so that their meanweight is 2.5g. Does the Mint specification appear to be met?2.50342.58282.47982.38232.52642.42322.51352.48702.49272.5047а. Но:На:b. level of significance:test-statistic (t or z test):tail of distribution:.c. Decision Rulearea ofrejection andассeptedregiond. Computatione. Decisionf. Conclusion

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Answered: 1. Listed below are weights (grams)…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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4. A new method for cholesterol utilizing 4 - aminoantipyrine was evaluated in the laboratory. The procedure was run in on 20 separate days. The following values are given: Mean = 150 mg/dl Sum of the squared difference from the mean is 3600 Calculate the SD.
a) Calculate the unbiased estimate for the population mean b) Calculate the unbiased estimate for the population standard deviation
A variable is normally distributed with mean 34 and standard deviation 11. Use the Cumulative Z-Score Table to answer the following questions. Write your answers in decimal form using 4 decimal places. a) Find the area under the normal curve to the left of the data value 63.7. b) Find the area under the normal curve to the left of the data value 2.1. c) Find the area under the normal curve to the right of the data value 30.7. d) Find the area under the normal curve to the right of the date value 29.05. e) Find the area under the normal curve between the data values 2.1 and 29.05.
2 3 4 5 answer only
1. It is the most reliable measure of variation or dispersion? choose: Range Standard deviation Mean deviation Variance 2.The weights of ripe watermelons at Mr. Pakwan's farm are normally distributed with a standard deviation of 1.4 kg. Find the mean weight of Mr. Pakwan's ripe watermelons if only 3% weigh less than 3.5 kg. choose: 5.28 kg 3.61 kg 6.13 kg 4.90 kg thanks
Q5. A random sample of size n = 10 from a normal population has mean = 5.68 and a standard deviation s = 0.29. Construct a 95% C.I. for the true variance o? of the population.
42. The speeds of vehicles on a certain part of a highway are normally distributed with a mean of 60 mph and a standard deviation of 6 mph. Use the Empirical Rule to answer the following questions. a. Approximately what percentage of vehicles travel at a speed between 54 mph and 66 mph? b. Approximately what percentage of vehicles travel at a speed greater than 72 mph? c. Approximately what percentage of vehicles travel at a speed not greater than 78 mph?
The average number of miles (in thousands) that a car's tire will function before needing replacement is 65 and the standard deviation is 18. Suppose that 48 randomly selected tires are tested. Round all answers to 4 decimal places where possible and assume a normal distribution. For the 48 tires tested, find the probability that the average miles (in thousands) before need of replacement is between 66.6 and 69.5. For part d), is the assumption that the distribution is normal necessary? Yes or No

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