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Suppose that 10 patients with meningitis received treatment with large doses of penicillin. Three days later, temperatures were recorded, and the treatment was considered successful if there had been a reduction in a patient's temperature. Denoting success by S and failure by F, the 10 observations are S S F S S S F F S S
a. What is the value of the sample proportion of successes?
b. Replace each S with a 1 and each F with a 0. Then calculate x for this numerically coded sample. How does x compare to p ^ ?
c. Suppose that it is decided to include 15 more patients in the study. How many of these would have to be S's to give p ^ 5 .80 for the entire sample of 25 patients?
The three-year recidivism rate of parolees in Florida is about 30%; that is, 30% of parolees end up back in prison within three years.
What is the probability that exactly 25 households have broadband coverage?- What is the probability that at most 30 households have broadband coverage?
What kind of statistical test best did you use?
Construct an appropriate control chart and comment on the process.- How many dietary errors do you predict if no changes are made in the process?
Find SST, SSA, and SSE.- Find MSA and MSE.- Compute the value of the test statistic.- If a = 0.05, would you reject the null hypothesis?
He finds their mean weight to be 17.78 ounces with a standard deviation of 0.4 ounces. Are the cereal boxes lighter than they should be? Let α = 0.01.
Assume that a decision maker wants to estimate a population proportion with 90% confidence and a margin of error of ±0.03. The decision maker has obtained a pilot sample of 10.
Find the system reliability for each of the following.: (b) Which has the higher reliability? How could you configure a system of such relays to bring RS(t) up to 0.999?
For many school systems, an IQ of 70 indicates that the child may be eligible for special education. What proportion of the general population has an IQ.
the rayleigh probability density function is the special case of the weibull probability density function when u03b1
Find the questions based on multiple regression - The coefficient of determination for the above model is approximately
The accountant does not purchase his computer software by mail order direct given that he does purchase his computer hardware by mail order direct.
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