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A drug manufacturer wants to estimate the effect of its new drug designed to increase patients white blood cell count. How many sample runs of the drug must be performed to ensure that the estimate is accurate to within 50 cells (per microliter of blood) at 95% confidence? Assume the population standard deviation to be 110 cells.
Find out the suitable critical value(s) for this situation given a 0.05 significance level. Find out/compute the value of sample test statistic.
Compute the value of the proportion of the population.
Solve the mean and standard deviation equations
Assume that you choose a 50 families sample. Which is the form expected from the distribution of the average or median of the sample?
Determine percentage of employees has 5 dependents? Of all employees which have at least one dependent, determine percentage has more than one?
A manufacturer of a chemical used in glue, attempting to control the amount of a hazardous chemical its workers are exposed to, has given instructions to halt production if the mean amount in the air exceeds 3.0 ppm.
This activity is a revision of an activity found in Real Data: A Statistics Workbook Based on Empirical Data by Z. C Holcomb (1997). Published by Pyrczak Publishing.
Write Cumulative distribution function.Find the cumulative distribution function F(x).
When the names of all the students at Omega University were dropped to a fishbowl, they would include:
Assume that the distribution of heights of adults American normally distributed, with mean 69 inches and standard deviation 2.8 inches.
Determine the probability that tire wears out before 70,000 miles?
A) Describe the term population. B) Describe the term random sample. C) What is the difference between a population and a random sample?
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