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1. A novel process for making organic gas takes biomass in the form of sucrose and converts it into gasoline using catalytic reactions. In one step in a pilot plant process, a chemical engineer measures the output of carbon chains of length three. Nine runs with the same catalyst gave the yields (gal).
0.63 2.64 1.85 1.68 1.09 1.67 0.73 1.04 0.68
What can the chemical engineer say with 95% confidence about the maximum error, if he uses the sample mean to estimate the true average yield medium?
2. With reference to the previous exercise, assume that the yield has a normal distribution and a 95% confidence interval for the average mean of the pilot plant process.
Reverend Fred Phelps "failed in his effort to repeal an antidiscrimination ordinance in an election."8 Final results showed 14,285 of all voters (53%) opposing
In the sample of 400 households, 112 were watching the series. At the 5% significance level, would the series be judged successful on basis of this sample information?
The mean score of a college entrance test is 500, the standard deviation is 75 and the scores are normally distributed.
Generate another set of data from the same address list, this time with a 30% item nonresponse rate. (The nonresponse parameters are 0, .3, 0.)
a customer may roll two fair dice and rent a second movie for an amount in cents determined by the numbers showing on
Suggest some plausible examples of each of the given. - Reasons for common cause variation in response time.- s-type special causes.
a. There is a 1% chance that the total return on the nine investments is less than what value? b. What is the probability that the investor's total return is between $400,000 and $520,000?
The average number of acres burned by forest and range fires in a large Wyoming county is 4,300 acres per year, with a standard deviation of 750 acres. The distribution of the number of acres burned is normal.
michaels teacher informed him that his score of 98 on the last algebra test corresponded to a z-score of -2.12. which
Good weather and tipping. Exercise 25.35 (text page 650) gives the data for a study on the effect of a waitress's weather prediction on the tipping percent. Carry out data analysis and ANOVA to determine whether there are differences among the mea..
What is the probability trading volume will be less than 400 million shares?
High temp for January 1st is normally distributed with a mean of 40 degrees and a standard deviation of 5 degrees.
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