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Nine hundred (900) high school freshmen were randomly selected for a national survey. Among survey participants, the mean grade-point average (GPA) was 2.7, and the standard deviation was 0.4. What is the margin of error, assuming a 95% confidence level?
1. a random variable has possible values of 20 21 22 23 and 24 that are equally likely to occur.a what is the
determine if the statements below are true or false. for each statement suggest an alternative wording to make it a
A raffle offers a first prize of $1000 2 second prizes of $300 and 20 third prizes of $10 each. If 15000 tickets are sold at 75 cents each, find the expected winnings (IN CENTS) for a person buying one ticket?
question two concentric circles are such that a chord of the larger 36 cm long is trisected by the smaller. the sum of
A multiple-choice examination consists of 90 questions, each having possible choices a, b, c, d, and e. Approximate the probability that a student will get at least 21 answers correct if she randomly guesses at each answer.
Natural Science, 415; Social Science, 511; Business Administration, 619; Philosophy, 196. Create a Pareto chart representing this information.
question assume the branch manager requested estimates of the mean selling price of gulf view condominiums with a
Yet in the city as a whole, about 29%of the eligible jurors were women. Let p denote the probability that a juror drawn by the judge is a woman. Then to test the judge’s fairness in selecting women, what null hypothesis should be? What alternative hy..
1.from previous polls it is believed that 66 of likely voters prefer the incumbent. a new poll of 500 likely voters
Compute 99% confidence intervals for the average daily maximum temperature in August for each of the three years in which you collected data. How do they compare?
A personal computer manufacturer is interested in comparing assembly times for two keyboard assembly processes. Assembly times can vary considerably from worker to worker, and the company decides to eliminate this effect by selecting a random samp..
explain why ms-within is not an appropriate error term demoninator for the repeated measures
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