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A study claims that 85% of bronx high school students experience homework problems. Jessie wants to test this claim, so she randomly samples 60 students and finds that 45 have experienced homework problems. Test the study claim at the 95% level of confidence.
a. Yes, the study's claim is valid
b. No, the study's claim is not valid
c. both a and b are corect, depending on the total number of bronx h.s. students
d. none of the above
The standard deviation of all possible x values is called the?
a population has u100 and sigma20. if you select a single score from this populaton on the average how close woud it be
Construct a perfect one-factorization of K_2n for infinitely many values of n. Prove the factorizations are perfect
What is the probability that there will be a stock out? Given that you, the maintenance officer at the facility, want the probability of a stock out to be no more than 5% what should the reorder point be?
When sampling is done for the proportion of defective items in a large shipment, where the population proportion is 0.18 and the sample size is 200, what is the probability that the sample proportion will be at least 0.20?
Assume sps professors have the average life normally distributed of 82 years, with population standard deviation of 5 years. Determine percent of sps professors will not live more than 80 years?
Suppose Abraham Lincoln had answered a survey questionnaire in which he indicated that he had not received a grade school diploma. The researcher found that Lincoln's educational score did not correlate with the expected variables. What was wrong?
Consider two urns with the following composition: Urn 1 contains 5 red and 15 black balls, Urn 2 contains 8 red and 12 black balls.
suppose you estimate a model obtaining wage 0.620 0.506 times educ 2.27 times female were wage is measured in
What is the approximate probability that the total time spent on the calls will be greater than 98 minutes? Give your answer to four decimal places.
Develop a model for determining how many people should be sent to contain the fire and for determining the best location for the firebreak.
College Athletics: Graduation Rate. Women Athletes at the University of Colorado Boulder have a long term graduation rate of 67%. Over the past several years, a random sample of 38 women athletes at the school showed that 21 eventually graduated.
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