A researcher has conducted a study among the students in a local university. The information is recorded in the data set on page 5. Use the data set to answer ALL questions. All workings must be shown.
Question 1 (40 marks)
a. Construct the probability distribution of the number of students who are wearing spectacles when three students are randomly selected from this university. Hence, calculate the mean. Interpret the value of the mean.
[8 marks]
b. Construct the 98% confidence interval of the time spent exercising by all students who wear spectacles.
[8 marks]
c. Calculate the probability that less than 5 of the 11 students selected who like black colour.
[8 marks]
d. Find the probability that a randomly selected student will dine out at least 2 or more times a day.
[8 marks]
e. Calculate the probability that the age of a selected female student is aged between 20 and 24 years old. State your assumption(s) made.
[8 marks]
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.
Read moreEach paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.
Read moreThanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.
Read moreYour email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.
Read moreBy sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.
Read more