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Suppose the mean number of days to germination of a variety of seed is 22, with standard deviation of 2.3 days. Find the probability that the mean germination time of a sample of 160 seeds will be 0.5 day of the population mean.
A cheerleading squad received a mean rating (out of 100 possible points) of 75 ± 12 (!l ± cr) in competitions over the previous three seasons.
Formulate the null and alternative hypotheses for a hypothesis test. Identify the population and describe how to select a random sample for a hypothesis test. State in clear terms the conclusion that should be given if the null hypothesis is rejec..
In the mid-1990s, Colgate-Palmolive had developed a new toothpaste for the U.S. market, Colgate Total, with an antibacterial ingredient that was already being successfully sold overseas.
The average patient should pay no more than $250 out-of-pocket? State your hypotheses and decision rule. (b) Is this a close decision?
French. Consider the association between a student's score on a French vocabulary test and the weight of the student.
A student wonders if tall women tend to date taller men than do short women. She measures herself, her dormitory roommate
For a discrete probability function that is given as: a. What is the expected value E(Y)? b. What is the standard deviation (σ) of the random variable Y?
Otherwise, no ordering will take place. Find the steady-state probabilities of the state of this Markov chain?
Of 500 employees, 200 participate in a company's profit-sharing plan (P), 400 have major-medical insurance coverage (M), and 200 employees participate in both programs. Construct a Venn diagram to portray the events designated P and M.
Is spine bone density is normally distributed in young women with a mean of 1.0 g/cm 2 and a standard deviation of .10 g/cm 2 , then how many young women out of 100 would you expect to have bone densities less than .85 g/cm 2 ?
Professor Jennings claims that only 35% of the students at Flora College work while attending school. The dean thinks that the prof. has underestimated the number of students with part-time or full-time jobs.
The National Assessment of Educational Progress (NAEP) gave a test of basic arithmetic and the ability to apply it in everyday life to a sample of 840 men 21 to 25 years of age.
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