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There is an issue with treatment side effects: individuals with a certain variant of the (fictitous) CEHS gene suffer serious muscle cramps at a rate of 2.1 per month, while those without the variant suffer cramps at a much lower 0.8 per month. 9% of the population have this gene variant. If an individual suffers a third cramp before the end of two months, what is the probability that he/she has the variant form of the gene?
Twenty-five samples of size 4 resulted in statistics of x=30.0 minutes and R = 2.5 minutes for the company to completely clean a rug. Compute control limits for x- and R-charts and estimate the standard deviation of the process.
Let X denote number of students which were on bus carrying this arbitarily selected student. One of the 4 bus drivers is also arbitarily selected. Calculate expectations and variances of X.
Your task is to interview a representative sample of attendees for the large concert venue where you work. The new season includes 200 live concerts featuring all types of musicians and musical groups.
In a bottling process, a manufacturer will lose money if the bottles contain either more or, less than is claimed on the label. The quality manager of a plant is interested in testing whether the mean ounces of catsup per family size bottle differ..
a manager must decide on the mix of products for the coming week. product a requires three minutes per unit for molding
What is the appropriate t-test to conduct and should the null hypothesis be rejected
according to a recent national survey high school girls average 100 text messages daily. assume the population standard
in a remote tropical region there is a direct road from a to b but it is impassable about 50 of the time due to rain.
A random sample of 9 homes was selected in the neighborhood. What's an estimate of the average price of the houses in the sample?
an average computer mouse inspector can inspect 45 mice per hour with a population standard deviation of 10 mice per
the qwik market amp branding company has found the following results of married people in a taste test of a popular
Calculate the test statistic (z-score) for the sample. What decision should be made about the null hypothesis, and what decision should be made about the effect of the program.
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