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A doctor want to estimate the HDL cholesterol of all 20-to 29 year old females. How many subjects are needed to estimate the HDL cholesterol within 2 points with 99%confidence assuming Q= 15.4 ? suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size required? A A. 99% confidence level requires ____subjects (round to the nearest whole number B.95% confidence level requires ____ subjects. How does the decrease in confidence affect the sample size required ? 1.The lower the confidence level the smaller the sample size 2. The sample size is the same for all levels of confidence 3.The lower the confidence level the larger the sample size
How does the utility curve differ for risk seekers and risk avoiders? Are you familiar with one of these types? APA format 300-400 word count
A quality control analyst measures the number of hours a patient in a low-risk condition waits for care at the emergency room of a small hospital. The following data are obtained for 20 patients.
Use a regression model with dummy variables as follows to develop an equation to account for seasonal effects in the data. Qtr1 = 1 if Quarter 1, 0 otherwise; Qtr2 = 1 if Quarter 2, 0 otherwise; Qtr3 = 1 if Quarter 3, 0 otherwise.
Briefly describe why life insurers typically invest most
problem 1a researcher is interested in evaluating whether there is a relationship between number of packs of cigarettes
State the null and alternative hypotheses
Can the company rely on the fact that the strength of the chemical is identical from batch to batch and from barrel to barrel and what is the mean strength of the chemical in these stored barrels? How prccisc is that estimate?
In a random sample of 28 sports cars, the average annual fuel cost was$2929 and the standard deviation was $786. Construct a 90% confidence interval for u. Interpret the results. Assume the annual fuel costs are normally distributed.
Calculate the gross premium
A weight-loss clinic advertised that last month its patients, on average, lost 6 LBS . Assuming that average refers to the mean, which of the following claims must be true based on this information
Using the information from part by hand, calculate a 90 confidence interval for the difference of the means for the two time periods.
Standard normal distribution: finding the probability that a randomly selected cell phone bill is between 60 and $83?
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