math course

There are 156 candidates taking a course. The probability that a candidate passes the course is 0.73. Find the probability that 2 out of 3 candidates chosen at random pass the course. => 43% or 73% or 56% or 81%..

Find the z scores of three students who had a score of 93, 80, 84 in an examination for a pre-medicine course which has a mean of 84 and a standard deviation of 4. => 9, - 4, 0 or 23.25, 20, 21 or 2.25, - 1, 0 or - 2.25, 1, 0..

Charles has to select two subjects from four subjects in a course. In how many ways can he choose the 2 subjects? => 2 or 3 or 6 or 4..

The number of credits in business courses that 5 job applicants took is shown as 33, 27, 46, 54, 94. Check for outlier. => 27 or 63.5 or no outlier or 94..

Select the areas where probability is used. I. insurance industry II. end of the course examinations III. weather predictions IV. baseball game => all are correct or I and III only or III and IV only or I, III and IV only..

A professor wanted to know whether the proportion of the students joining the new course is same for Grade 8, 9 and 10. He surveys 50 students from each grade. The results are as shown. 8 th 9 th 10 th Total Will join 28 24 32 84 Will not join 22 26 18 66 Total 50 50 50 150 At α = 0..

Over a period of time the grades given by the faculty in a particular course have averaged 12% A+, 20% A, 25% B, 23% C, and 20% D. A new faculty gives 30 A+, 45 A, 50 B, 40 C, and 35 D. Determine at α = 0.01, the chi-square test value and whether the new faculty is following the gra..

A dietician claims that taking a special vitamin course can increase the physical strength of a person. The data corresponding to the weight(pounds) they are able to lift before and after taking the vitamin course is shown. Find the test value. Can you support his claim at 95% c..

The table shows the percentage of scores obtained by John each year during his four year degree course. Which of the following is the equivalent box-and-whisker plot of the data? Also find out the median of scores obtained. Year Percentage of scores 1st Year 70 2nd Year 82 3rd Year 76 4th..

The table shows the percentage of scores obtained by Sunny each year during his four year degree course. Which of the following box-and-whisker plots match the data? Year Percentage of scores 1st Year 70 2nd Year 82 3rd Year 76 4th Year 80 => Plot 1 or Plot 2 or Plot 3 or Plot 4..