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1. Imagine that Exam 1 for Statistics 2160 this term will have 59 questions. Each question has 5 multiple choice options, giving you a probability of 0.2 of getting each question right purely by guessing. Assuming that you guess on all questions, what is the probability that you get at least 8 questions right on your exam? Answer options: 1) 0.8602 2) 0.0324, 3) 0.1398, 4) 0.0648, 5) 0.9251
2. Pandora Radio has determined that the probability of a user liking a new song enough to give a "thumbs up" is 0.6138. Given that Pandora plays about 861 new songs per user per month on average, what is the probability that greater than 534 of those plays gets a "thumbs up"? Answer options: 1) 0.6624, 2) 0.3636, 3) 0.0260, 4) 0.3376, 5) 0.0130
Assume a steady smoker spends on average $20 with a standard deviation of $5 per week on cigarettes. What is the probability that a sample of 100 steady smokers spend between $19.50 and $21?
a statistics student plans to use a ti-84 plus calculator on her final exam from past experience she estimates that
A researcher believes that if she uses a different text the students will score differently on the standardized test but she doesn't know what the difference is. The test had a mean of 110 and a σ of 12.
If the average price of a new home is 145,000 what is the minimum and maximum prices of the houses a contractor will need to build to include the middle 80% of the market.
in a class with 18 boys and 12 girls boys have probability 13 of knowing the answer and girls have probability 12 of
a deck of 52 cards is shuffled and a bridge hand of 13 cards is dealt out. let x and y denote respectively the number
Is there a linear relationship between age and education, and if so, how strong is that relationship? Is it possible to predict educational level based on age? If so, what limitations exist for the developed method?
public health officials claim that people living in low income neighborhoods have different physical activity levels
State the hypotheses for a right-tailed test. Obtain a test statistic and p-value assuming unequal variances. Why might the sample data not follow a normal, bell-shaped curve? If not, how might this affect your conclusions?
q1. a multiple-choice test has 6 questions. there are 4 choices for each question. a student who has not studied for
q1 suppose two fair six-sided dice are tossed and the random variable x is used to represent the sum of the numbers
Construct a 99% confidence interval estimate for the population mean amount of paint included in a 1-gallon can.
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