9. Approximately 75% of statistics students do their homework on time for it to be collected...
9. Approximately 75% of statistics students do their homework on time for it to be collected and graded. Eight students were randomly selected. Use the binomial distribution to answer the questions.
a) Find the probability that one student did their homework on time.
b) Find the probability that at least 7 students did their homework on time.
Homework Answers
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9. Approximately 75% of statistics students do their homework on
time for it to be collected...
nter?mode-eval&course.jd 78 Problem 5 Approximately 60% of statistics students do teir homework in time for it...
nter?mode-eval&course.jd 78 Problem 5 Approximately 60% of statistics students do teir homework in time for it to be collected and graded. Each student does homework Independently. We select a random sample of 25 students. Let X denote the number of students who do their homework on time. a. (3%) X may take on integer values from to b. (3%) Give the distribution of X :X- Cekone® 3%) How many are expected to do their homework on time? /1X1- d. (396)...
Probability that a randomly choose student in a statistics class submits his/her homework on time is...
Probability that a randomly choose student in a statistics class submits his/her homework on time is 0.14. Each student does homework independently. In a statistics class of 50 students, what is the probability that at least 5 will do their homework on time?
3. Exam grades across all students across all sections of an introductory statistics class are approximately...
3. Exam grades across all students across all sections of an introductory statistics class are approximately normally distributed with a mean of 72 and a standard deviation of 11. Use the normal distribution to find answer the following questions. a. What percent of students scored above a 90%? b. What percent scored below 60%? c. If the lowest 5% of students will be required to attend an extra study session, what grade is the cutoff for being required to attend...
Suppose that students in a statistics course were asked whether they preferred multiple choice questions or...
Suppose that students in a statistics course were asked whether they preferred multiple choice questions or whether they preferred short answer questions. 70% said that they preferred multiple choice questions. 60% of the students were male. 75% of the males preferred multiple choice. Suppose a randomly selected student is a female. What is the probability the student prefers multiple choice questions?
A statistics instructor collected data on the time it takes the students to complete a test....
A statistics instructor collected data on the time it takes the students to complete a test. The test taking time is uniformly distributed within a range of 55 minutes to 85 minutes. a) Determine the height and draw this uniform distribution. b) How long is the typical test taking time? c) Determine the standard deviation of the test taking time. d) What is the probability a particular student will take less than 60 minutes? e) What is the probability a...
6. Students in one statistics course need to earn a grade of at least C, otherwise...
6. Students in one statistics course need to earn a grade of at least C, otherwise they need to repeat the course. It is also known that 85% of all students who attend class regularly will earn a grade of at least C, while only 30% of those students who do not attend class regularly will earn a grade of at least C. Historically, 80% of all students in this course attend class regularly. You must explicitly define any events...
In a "Probability and Statistics for CS" class with 160 students enrolled in it, by the...
In a "Probability and Statistics for CS" class with 160 students enrolled in it, by the time of the final exam, 60% of the students have mastered discrete probabilities, 75% have mastered continuous probabilities, and 50% have mastered both. For a student to pass the class with at least a C, the student must be able to use at least one type of probabilities. How many students passed the class? (Probability Theory)
i need clear writing 3. (9 Marks) The length of time required by students to complete...
i need clear writing
3. (9 Marks) The length of time required by students to complete a coe-hour exam is a random variable with a probability density function (pdf) given by 1) = c +2 OSX S1 a) Find the value and write down the new pdf. (2 points) b) Find the probability that a randomly selected student will finish in less than half an hour. (3 points) c) Find the mean and standard deviation of the distribution. (4 points)...
Binomial Distribution: A college finds that 40 percent of all students take a course in statistics....
Binomial Distribution: A college finds that 40 percent of all students take a course in statistics. Success is defined as a student not taking a course in statistics. P(Success) = P(student does not take statistics) = 1- .4000 =.6000 . If a group of 8 students are considered: What is the probability that less than 3 students do not take statistics? (use the table in the back of your textbook) (do not round)
(9 Marks) The kength of time required by students to complete a one-hour xam is a...
(9 Marks) The kength of time required by students to complete a one-hour xam is a random variable with a probability density function (pdf) given by f(x) + OSX S1 a) Find the value and write down the new pilf (points) b) Find the probability that a randomly selected student will finish in less than half an hour. (3 points) c) Find the mean and standard deviation of the distribution (4 points) SD
nter?mode-eval&course.jd 78 Problem 5 Approximately 60% of statistics students do teir homework in time for it to be collected and graded. Each student does homework Independently. We select a random sample of 25 students. Let X denote the number of students who do their homework on time. a. (3%) X may take on integer values from to b. (3%) Give the distribution of X :X- Cekone® 3%) How many are expected to do their homework on time? /1X1- d. (396)...
6. Students in one statistics course need to earn a grade of at least C, otherwise they need to repeat the course. It is also known that 85% of all students who attend class regularly will earn a grade of at least C, while only 30% of those students who do not attend class regularly will earn a grade of at least C. Historically, 80% of all students in this course attend class regularly. You must explicitly define any events...
In a "Probability and Statistics for CS" class with 160 students enrolled in it, by the time of the final exam, 60% of the students have mastered discrete probabilities, 75% have mastered continuous probabilities, and 50% have mastered both. For a student to pass the class with at least a C, the student must be able to use at least one type of probabilities. How many students passed the class? (Probability Theory)
i need clear writing
3. (9 Marks) The length of time required by students to complete a coe-hour exam is a random variable with a probability density function (pdf) given by 1) = c +2 OSX S1 a) Find the value and write down the new pdf. (2 points) b) Find the probability that a randomly selected student will finish in less than half an hour. (3 points) c) Find the mean and standard deviation of the distribution. (4 points)...
(9 Marks) The kength of time required by students to complete a one-hour xam is a random variable with a probability density function (pdf) given by f(x) + OSX S1 a) Find the value and write down the new pilf (points) b) Find the probability that a randomly selected student will finish in less than half an hour. (3 points) c) Find the mean and standard deviation of the distribution (4 points) SD
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