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A multiple-choice test consists of 7 questions. Each question has answer choices of a, b , c and d and only one of the choices is correct.
If a student randomly guesses on each question, what is the probability that she gets fewer than 2 of them correct?
Carry your computations to at least four decimal places, and round your answer to at least two decimal places.
The University is attempting to set its staffing plan for the next several year, and it wants to determine if the distribution of students among various graduate majors has changed from the historical averages which were:
Discuss how the distribution of income among various groups of income earners have changed in this country during the past 50 years.
a soft-drink machine is regulated so that it discharges an average of 200 milliliters per cup. if the amount of drink
The sample yielded a mean content of 11.88 ounces, with a standard deviation of 0.24 ounces. With a 0.05 level of significance, test to see if the machine.
You need to select a simple random sample of four from eight friends who will participate in a survey.
Suppose the regression equation that has been used to estimate the value of existing homes is as follows; Interpret the meaning of the slopes of this equation.
When, in a criminal court, a defendant is found "not guilty," is the court saying with certainty that he or she is innocent? Explain.
Using the sample variance from the data of your own survey to estimate the population variance, specify a desired precision and calculate the sample size necessary to achieve it with 95% confidence in a future survey of the same population.
A doctoral student is designing a research study. She is hoping that the results of the study are statistically significant. What type of p-value would she want to obtain? Select one of the following.
Problem 1: An insurance company estimates the probability of an earthquake in the next year to be 0.0013. The average damage did by an earthquake it estimates to be $60,000. If the company offers earthquake insurance for $100, what is the insuranc..
What percent of the junior Biology majors are ineligible for BioResearch?
The standard deviation of the differences d for the paired sample data s d = ____________
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