A preliminary survey shows that 31% of college students smoke. In a class of 40 students, what is the probability that more than 46% of the students smoke? Use Appendix B.1 for the z-values. (Round the z-value to 2 decimal places and the final answer to 4 decimal places.)
Probability
A preliminary survey shows that 31% of college students smoke. In a class of 40 students,...
A preliminary survey shows that 34% of college students smoke. In a class of 37 students, what is the probability that more than 49% of the students smoke? Use Appendix B.1 for the z-values. (Round the z-value to 2 decimal places and the final answer to 4 decimal places.) Probability ??
A preliminary survey shows that 20% of college students smoke. In a class of 35 students, what is the probability that more than 35% of the students smoke? Use Appendix B.1 for the z-values. (Round the z-value to 2 decimal places and the final answer to 4 decimal places.) Probability =
A selective college would like to have an entering class of 1000 students. Because not all students who are offered admission accept, the college admits more than 1000 students. Past experience shows that about 83% of the students admitted will accept. The college decides to admit 1200 students. Assuming that students make their decisions independently, the number who accept has the B(1200, 0.83) distribution. If this number is less than 1000, the college will admit students from its waiting list....
suppose that 50% of all college students smoke cigarettes. a sample of 12 is selected randomly. what is the probability that between 6 and 10 (both inclusive) students smoke? round your answer to four decimal places.
Suppose that 30% of all college students smoke cigarettes. A sample of 16 is selected randomly. . What is the probability that between 5 and 8 (both inclusive) students smoke? Round your answer to four decimal places.
Suppose that 30% of all college students smoke cigarettes. A sample of 14 is selected randomly. What is the probability that between 6 and 8 (both inclusive) students smoke? Round your answer to four decimal places.
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 77 minutes and a standard deviation of 12 minutes. Answer the following questions. Round the intermediate calculations for z value to 2 decimal places. Use Table 1 in Appendix B a. What is the probability of completing the exam in one hour or less (to 4 decimals)? b. What is the probability that a student will complete the exam in...
A college research group reported that 46% of college students aged 18-24 would spend their spring breaks relaxing at home Complete parts a through d below 2009. A sample of 150 college students was selected. a. Calculate the standard error of the proportion. (Round to four decimal places as needed.) b. What is the probability that less than 40% of the college students from the sample spent their spring breaks relaxing at home? P(Less than 40% of the college students...
I created a survey to see if tobacco use increased for students while in college (see below). What hypothesis test should I use to test the data I collected and what level of significance would be appropriate? Thank you. How many cigs/day did you smoke b4 college? How many cigs/day did you smoke while in college? None: 10 2 1 to 3: 14 10 4 to 6: 9 12 7 to 9: 4 9 More than 10/day: 3 7 Total:...
6. The college health center did a campus-wide survey of students and found that 18% of the students smoke cigarettes. A group of nine students randomly come together and sit at the same table on the plaza in front of the library. Find the probability that: (a) No student at the table smokes. (b) At least one student at the table smokes. (c) More than two students smoke. (d) From one to five smoke (including one and five).