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Several psychology students are unprepared for a surprise true/false test with 11 questions, and all of their answers or guesses.
Find the mean and the standard deviation for the number of correct answers for such students.
Would it be unusual for a student to pass by guessing a getting at least 5 correct answers?
Determine Hernandez's optimal shipping quantities so as to minimize total transportation costs.
the lengths in centimetres of nails produced in a factory are normally distributed with mean 4.0 and variance 0.0016.
Make a decision regarding the null hypothesis based on the sample information. Interpret the results of the test and state your conclusion.
question dr. patton is a professor of english. recently she counted the number of misspelled words in a group of
Find the point estimate p-hat and the margin of error for the confidence interval (0.444, 0.484)
sample mean = 3.5, standard deviation = 0.9. Use 98% confidence interval to evaluate difference in mean weekly deposits into IRAs for each bank.
One normal curve has mean 23 and standard deviation 1, a second normal curve has mean 5 and standard deviation 10. The curve that is more dispersed, or spread out, is
How many hunters must be included in the survey? Assume that data gathered in earlier surveys have shown € to be approximately 10.
suppose that contamination particle size in micrometers canbe modeled as fx 2x-3nbspfor 1ltx and fx 0 for xlt 1a
Normal with a standard deviation of 0.3 inch. How does the diameter of an orange at the 67th percentile compare with the mean diameter?
Evaluate the multiple regression model between quantity sold (Y) and following explanatory variables: average price of deep-dish pizzas, monthly advertising expenditures, and disposable income per household in areas surrounding outlets.
Out of a random sample 167 students pass an exam out of the 300. how do you calculate an exact 99% confidence interval for the proportion of sudents who passed the exam?
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