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Here is a simple probability model for multiple-choice tests. Assume that each student has probability p of correctly answering the question chosen at random from universe of possible questions. (A strong student has a higher p than a weak student.) Answers to different questions are independant. Jodi is a good student for whom p=0.75
a)Use the normal approximation to find the probability that Jodi scores 70% or lower on a 100-question test.
b)If the test contains 250 questions, what is the probability that jodi will score 70% or lower?
When the purpose of sampling is to detect when a process becomes too variable the chart of choice will be a c-chart?
Does the weight of a vehicle affect the gas mileage? The following random sample was collected where x = weight of a vehicle in hundreds of pounds and y = miles per gallon.
Consider the following data for two independent random samples taken from two normal populations. What is the 90% confidence interval estimate of the difference between the two population means?
The CEO of the business has nothing better to do wheras measured the temperatures of 26 department managers 1 to 4 times every day to get a total of 123 measurements.
Assuming that these results are sample data randomly selected from the population of all past and future Olympic games
The 99% confidence interval estimating the proportion of all students at the university who prefer outdoor exercise is given by which of the following?
Test the hypothesis. Will you reject or not reject the null hypothesis at α = 0.05
what sample size should be used in the funding decision study? Use σ = $4000 as a planning value. ________________
Calculate the appropriate test statistic to test the hypotheses related to the concern and test at 5% and 1%.
To findout 95 percent with confidence interval for the mean amount a citation. Police Chief Aaron Ard of River City reports 500 traffic citations were issued last month.
Determine the 90% confidence interval for average days worked by employees in all payroll departments?
Discussion should include a critical reflection on the way in which you completed the market challenge element of the module.
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