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The manufacturer of a laser printer reports the mean number of pages a cartridge will print before it needs replacing is 12,200. The distribution of pages printed per cartridge closely follows the normal probability distribution and the standard deviation is 820 pages. The manufacturer wants to provide guidelines to potential customers as to how long they can expect a cartridge to last. Refer to the table in Appendix A.1.
How many pages should the manufacturer advertise for each cartridge if it wants to be correct 99 percent of the time? (Round your answer to the nearest whole number. Round z-value to 2 decimal places.)
The weight of an almond is normally distributed with mean 0.05 ounce and standard deviation of 0.015 ounce. Find the probability that a package of 100 almonds will weigh between 4.3 and 5.3 ounces.
The time in hours required for 40 individuals to complete their federal income tax returns. Using past years' data, the population standard deviation can be assumed known with σ=9 hours.
A sample of 4 different calculators is randomly selected from a group containing 42 that are defective and 27 that have no defects. what is the probability that all four of the calculators selected are defective?
Describe different methods of establishing correlation between variables and provide an example of each. Discuss the advantages and disadvantages of each method and where each must be applied.
An international marketer has said, "When political instability increases, the price of quality increases." Think about the potential issues with measurements and data collection. Is this a testable hypothesis?
If you have a body temperature of 99.00 °F, what is your percentile score? Convert 99.00 °F to a standard score (or a z-score).
answer each question with a minimum of 50 words per question1 describe a scenario where you believe a binomial
Michelle is a counselor at the local crisis center. She wishes to determine if there is a relationship between the gender of an individual and the amount of alcohol consumed.
Are the events "Republican" and "30-44" independent? Justify your answer. Are the events "Democrat" and "65+" independent? Justify your answer.
two towns both have a mean income for their residents of 30000. the standard deviation of incomes of residents in
Describe a psychological research situation or scenario that would use a nonparametric test. Why would the nonparametric test be used?
1. an experiment has four equally likely outcomes e1 e2 e3 and e4.a. what is the probability that e2 occurs?b. what is
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