12th grade courses

Attenuation is undesirable because it reduces signal strength at the receiver. More serious, however, is distortion interference, and noise, which appear as alternations of the signal shape. Although such contaminations may occur at any point, the standard convention is to blame them entirely..

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%..

The average score of students in statistics examination is 90, with a variance of 4. The average score of students in algebra examination is 102, with a variance of 7. Which course is more variable in terms of scores? => algebra or both are equally variable or cannot be determined or stat..

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..

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..

An enemy war ship was traced on a radar sheet. The course of that ship was identified as 5 x - 4 y = 13. A missile was directed to target that war ship. The course of that missile was x + 3 y = 14. At what point the missile could have blasted the war ship? => (- 5, - 3) or (- 3,..

According to the U.S. Department of Education, 26% of adults completed a four year degree after the age of 25. A researcher enquired 140 adults and found that 42 of them completed the degree course after the age of 25. Find the p-value for the test. Is the education department's report at..

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 ..

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 4..

A city University believes that 50% of the incoming students would take economics, 25% would take arts, and 25% would take engineering. A sample of the student population shows the following distribution. Course Economics Arts Engineering Number of students 38 23 19 At α = 0.01, fin..