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The Smith family has twins, Rob and Rachel. Both Rob and Rachel graduated from college two years ago, and each is now earning $50,000 per year. Rachel works in the retail industry, where the mean salary for executives with less than 5 years' experience is $35,000 with a standard deviation of $8,000. Rob is an engineer. The mean salary for engineers with less than 5 years' experience is $60,000 with a standard deviation of $5,000.
a. Compute the z values for both Rob and Rachel.b. Comment on your findings
Explain the effect outliers can have on the analysis of the center of this data set. Based on the box-plot and histogram you created for problem 1, do there appear to be any outliers?
Assuming that both patients are on time, find the expected amount of time that the 1:30 appointment spends in the doctor's office.
What is the probability that more than one machine is in the system? Probability that more than two are broken and waiting to be repaired or being serviced? More than three? More than four?
A sales manager wants to know if the sales productivity of her east region is greater than the sales productivity of her west region
The population mean of a company's racing bicycles is 9.07 kg (20.0 lb) with a population standard deviation of 0.40 kg. If the distribution is approximately normal
What assumption must you make about the population distribution in order to construct the confidence interval estimate in (a)?
The moment generating function of normal distributed random variable ,Y, with mean and variance .derive the moment generating function of X=-3Y+4.what is the distribution of X? why?
Calculate p value? What is the critical value?
The project requires you forecast the historical data, replicating the appropriate trends, seasonalities, week-over-week variability, etc. Please refer to the chapter and materials on Forecasting for the procedures to do.
Chances to increase in value, decrease in value, or remain the same. Estimate the probability at least two of the stocks increase in value.
what is the expected number of claims by males under 25? what is the standard deviation of the distribution. (How to show on excel using binodist formula).
Results Show the results and details of the tted regression models in appropriate tables and possibly any relevant graphs. Provide an interpretation of the results and a comparison of the three techniques for modeling (gee, glmm,transition).
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