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At school, 40% of students drink coffee. Consider a random sample of 50 students. What is the pro...
Coffee: The National Coffee Association reported that 65% of U.S. adults drink coffee daily. A random sample of 300 U.S. adults is selected. Round your answers to at least four decimal places as needed. (c) Find the probability that more than 66% of the sampled adults drink coffee daily The probability that more than 66% of the sampled adults drink coffee daily is
Suppose that a simple random sample of 145, 91 said they drink coffee in the morning. Step 1 of 5: What is the sample proportion for people who drink coffee in the morning? Step 2 of 5: Do we have what we need to compute a confidence interval? Yes, it's binomial. Yes, n≥30. Yes, we have a simple random sample, it is binomial with n/.05 gives a value less than the number of people than that in the world, and...
QUESTION 8 There are 8,000 students at the School of Management, UT Dallas. The average age of all the students is 24 years with a standard deviation of 3 years. A random sample of 36 students is selected. Find a value, C, such that the probability of sample means being greater than C is 0.6808. 10 points QUESTION 9 There are 8,000 students at the School of Management, UT Dallas. The average age of all the students is 24 years...
2. It’s conventional wisdom that grad students drink 4 cups of coffee per day. A graduate student took a sample of 25 fellow graduate students in her statistics class, and in the sample produced a mean of 3.3 cups per day and a standard deviation of 1.75. Because of this, she believes that the average is actually less than what is commonly thought (4 cups per day). Do we believe the graduate student’s claim or the conventional wisdom? Use a...
# 5 in a local university, 40% ofthe students live on the campus. A random sample of 96 tudents is selected for a special study. 쩍-96 41 ates. n error ofproportion-....6千 A. What is the probability that the sample proportion living at campus is between 0. 30 and 0. 50?
A certain state has the highest high school graduation rate of all states at 85%. A. In a random sample of 10 high school students from the state, what is the probability that 8 will graduate? B. In a random sample of 10 high school students from the state, what is the probability than 7 or fewer will graduate? C. What is the probability that at least 8 high school students in our sample of 10 will graduate? Show work...
Suppose 20% of grade-school students develop influenza. In a sample of 100 grade-school students, what is the probability that 30 or more of them will develop influenza?
(Use Problems 854-57 as examples) The following contingency table represents a random sample of medical students and their coffee consumption: Do Not Drink Coffee 145 80 Drink Decaffeinated Only 94 121 Drink Caffeinated Coffee 365 430 Male Female a. Find students who drink decaffeineted coffee only, decaffeinated coffee only)- b. Find females who drink either caffeinated or decaffeinated coffee. Plfemale I caffeinated or decafeinated coffee) - c. Find females who do not dnnk coffee at al. rdo not drink coffee...
Suppose 80% of all students use Snapchat. In a random sample of 10 students: What is the probability 8 of these students use Snapchat? What is the probability more than 6 of these students use Snapchat
At a coffee shop, 80% of customers purchase a drink, 40% purchase something to eat, and 20% purchase both a drink and something to eat. 1. What fraction of customers purchase only a drink? 2. Given that someone bought something to eat, what is the probability they also got a drink? 3. Given that someone bought a drink, what is the probability they didn’t buy anything to eat?