Confidence interval for the population proportion
Ina survey of 3464 adults, 1468 say they have started paying bills online in the last year. Construct a 99% confidence interval for the population proportion.
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you may assue ideal gas with constant specific heat, Cp = 1.0035 kJ/kg-K k = 1.4. What is the lowest maximum cycle temperature at which the engine will run (no net power output)?
Suppose that Y1, Y2, . . . , Yn denote a random sample from an exponentially distributed population with mean? Find the MLE (maximum likelihood estimator) of the population variance ?^2.
A randomly selected EMS call has an ambulance response time of 2 minutes. Is it likely that this call was serviced by Station A? Explain.
Examine the following sample data and determine whether it comes from an approximately normal distribution. In other words, create a stem-and-leaf plot, analyze how much of the data lies with 1,2 and 3 standard deviations of the mean, and find IQR
Find the minimum sample size needed, using a prior study that found that 54% of the respondents said they have high speed internet access.
Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) Calculate the standard deviation of the six x-values and the standard deviation of the six y-values. (Give your answers correct to three decimal
Suppose a very large collection of ball bearings has 0.10 percent defective. If we take a sample of 2500 bearings, what is the probability that we get at least two defectives in the sample? Solve the problem using binomial method.
When performing a hypothesis test and the population standard deviation is known, what is the p-value for a test-statistic of -1.63? Round your answer to 4 decimal places.
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