In a class on 50 students, 35 students passed in all subjects, 5 failed in one...
n a class on 50 students, 35 students passed in all subjects, 5 failed in one subject, 4 failed in two subjects and 6 failed in three subjects. Construct a probability distribution table for number of subjects a student from the given class has failed in. Calculate the Standard Deviation.
Mrs. Allenson surveyed her 50 students in her class on which subjects were their hardest? 23 of her students said that Reading was their hardest subject and 38 of her students said Math was their hardest subject. a. What are the chances that a random student selected in her class said that both Reading and Math were their hardest subjects? b. Compute (P M | R))
QUESTION 3 A class wrote two Mathematics tests. 72% of the class passed both tests and 90% of the class passed the first test. A student is chosen at random from this class. What is the probability that the student passed the second test given that the student passed the first test? QUESTION 4 The mean number of cars confiscated by a wrecker is five per day. Using the Poisson distribution, a) find the probability of the number of cars...
Please explain and show all work 3· Le t x represent the number of credit cards a student has. A random sample of 100 students at a large university was taken and the results are in the table below: Credit NumberRelative xStudentsPr) 12 P(x) Cards of Frequencyx .P(x) 45 25 10 TOTAL 100 1.00 a) Construct a probability distribution histogram and comment on its shape b) What is the probability a randomly selected student has at least two credit cards?...
A teacher sets a test for a class of students. The teacher decides to analyse the test results using statistical analysis techniques. Given the table of results below, complete the following tasks: CLASS RESULTS STUDENTS TEST SCORE% Thomas 74 Charles 55 Sarah 81 Mathew 68 James 71 Jessica 74 Daniel 86 Jack 66 Emma 73 Laura 72 Joshua 84 Alice 68 Samantha 70 a). Calculate the Mean of the test scores. b). Calculate the Median of the test scores. c)....
A teacher sets a test for a class of students. The teacher decides to analyze the test results using statistical analysis techniques. Given the table of results below, complete the following tasks: CLASS RESULTS Student Test Score (%) Thomas 74 Charles 55 Sarah 81 Mathew 68 James 71 Jessica 74 Daniel 86 Jack 66 Emma 73 Laura 72 Joshua 84 Alice 68 Samantha 70 a). Calculate the Mean of the test scores. b). Calculate the Median of the test scores....
Question 11-In a large statistics class. PM 100% of all students are male and the rest are female. The heights of all male students follow a normal distribution with mean Ax and standard deviation σΜ. The heights of all female students follow a normal distribution with mean Mr and standard deviation σ Suppose a random sample of n students is selected independently. Let H be the mean height of these n randomly selected students. a. Determine E[H) and Va[FI /...
5. North Carolina State University posts the complete grade distributions for its courses online. The distribution of grades for all students in all sections of Accounting 210 in the spring semester of 2001 was Grade Probability .18 32 34 09 07 a. Using the scale A -4, B-3, C-2, D- 1, and F 0, let Xbe the grade of a randomly chosen b. Let X denote the mean grade for a random sample of 50 students from Accounting 210. Since...
In an examination the probability distribution of scores (X) can be approximated by normal distribution with mean 69.5 and standard deviation 9.3. Suppose one has to obtain at least 55 to pass the exam. What is the probability that a randomly selected student passed the exam? [Answer to 3 decimal places] Tries 0/5 If two students are selected randomly what is the chance that both the students failed? [Answer to 3 decimal places] Tries 0/5 If only top 4% students...
(9 marks) 6) The data below shows the mass of 40 students in class. The measurement is the nearest kg. 55 70 57 73 55 64 60 48 59 72 58 54 69 51 63 78 75 64 65 57 71 78 76 62 66 62 61 53 67 49 76 63 63 76 52 76 71 61 56 71 A) Construct a frequency distribution table with 7 classes for the data given above? B) Draw the histogram for the...