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The average life of a particular battery is determined to be 56.2 hours with a standard deviation of 4.3 hours. Assume battery life is normally distributed. Batteries in the lower 10% do not meet minimum life requirements. What is the minimum life requirement for a battery?
A psycologist wants to research whether wearing cologne helps men attract women. What would be null hypothesis in this sturday and what would be the research hypothesis?
A health care professional wishes to estimate the birth weight of infants. How large a sample must she select if she desires to be 90% confident that the true mean is within 6 ounces of the sample mean?
the amount of each active ingredient in 1 pound of each chemical are given in the file P15_74.xlsx. It is necessary that at least 100 pounds of chemical 2 be used. Determine the cheapest way of producing today's batch of NasaMist
The analysis of covariance (ANCOVA) is generally useful for _______________
What contingency table test is used to see if there is a difference in the frequency distribution for two different groups?
Then the percentage of women in the populations is 53% and the percentage of men is 47%. If you were to sample 144 people at random, how many would you expect to be women?
In order to test to see if there is any significant difference in the mean number of units produced per week by each of three production methods, the following data were collected:
What type of research design is the strongest when I what to adopt a new educational program? Using a pre-test and post-test with control group, the previous method but without the control group.
Suppose that the number of babies born during an hour at a hospital's maternity wing follows a Poisson distribution with a mean of 4 per hour.
A major benefit of two-way ANOVA over several one-way ANOVAs, If an F test for interaction is significant.
What is the probability of selecting a value at random and discovering that it has a value of less than 395 pounds?
Toledo, OH has been experiencing improved economic growth following huge capital investments from companies like Chrysler. You have just been hired by RGP, an agency for facilitating business expansion and location in the Toledo metropolitan area.
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