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A student is taking a 10 question multiple choice quiz. There are four possible answers to each question. The student decides to guess at random on all 10 questions.
What is the probability:
a. the student will answer exactly 6 questions correctly?
b. the student will answer at most 6 questions correctly?
c. the student will pass the quiz (answer at least 6 questions correctly)?
Calculate and plot t he new supply schedule and indicate the new equilibrium price and quantity on your diagram
Can you give a general rule as to what happens with confidence intervals as a function of sample sizes and confidence levels? What are the trade-offs?
Find the point estimate p-hat and the margin of error for the confidence interval (0.444, 0.484)
The Travel Weekly International Air Transport Association survey asked business travelers regarding the purpose for their most recent business trip.
Teens were asked in the MTF 2006 survey how often they think about social issues (specific issues were not identified). The bivariate table includes responses organized by teen's race.
Determine the expected shape of distribution of sample mean? Compute the likelihood of choosing a sample with mean of at least $112,000?
To compare the effectiveness of three types of pain relievers, a homogeneous group of 22 students were divided randomly into three groups, and each group took one of three pain relievers for a period of 2 weeks.
Compute the correlation among the variables. Describe perfect correlation also negative correlation. Utilize the following data to answer questions related.
Based on the boxplots in part (a), which of the two groups, students or teachers, tends to have watch times that are closer to the true time? explain you choice.
A City Survey states that 70 percent of all business owners favor increasing the parking fees. The city has commissioned a random sample of n = 100 business owners.
You own a small tea company, Sweet Leaf, NASDQ ticker symbol LEAF. You are looking at marketing costs versus benefits. Your production manager says it doesn't matter which tea you produce
Test at 1% significance level that there exists a difference in proportion between men and women drivers who always use seat belts.
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