As HOMEWORKLIB answering guideline I have answered only the first four subparts

Please upvote if you like my answer
Thank you
The probability distribution function for the number of years it takes to complete a B.S. degree...
Problem 4 A bailet instructor is interested in knowing what percent of each year's class will continue on to the next, so that she can plan what classes to offer. Over the years, she has established the following probability distribution. (Let X the number of years a student will study ballet with the teachec, and Px) the probability that a student will study ballet for x years) Expand All x Pa) 2 0.2 0.2 0.25 0.05 6 0.1 7 0.15...
Using the table below to answer the following five questions: A company wants to evaluate its attrition rate, in other words, how long new hires stay with the company. Over the years, they have established the following probability distribution. Let X be the number of years a new hire will stay with the company. Also, let Pbx) be the probability that a new hire will stay with the company x years. P(x) 0.12 0.18 0.30 0.15 0.1 0.05 (a) Complete...
Determine if the following tables can serve as a probability distribution for some random variable based on the three conditions: (1) $X$ values are numerical. (2) $P(x)$ values are between 0 and 1 and. (3) sum of P(x) values is 1 (P(x) = 1). If all three conditions are met, write not applicable (NA) for the second part. (a) x 02 3 4 5 P(x) 0.2 0.24 0.16 0.3 0.2 This table a a probability distribution because it does not...
Complete the following probability distribution table: Probability Distribution Table X P(X) 10 33 0.2 37 0.1 49 0.3
Probability Distribution Table X P(X) −6-6 1111 0.1 2525 0.3 6969 0.3 Complete the following probability distribution table:
the following table presents the probability distribution of
the number of vacations X taken last year for a randomly chosen
family.
Question 6 0.1 pts The following table presents the probability distribution of the number of vacations X taken last year for a randomly chosen family. Find P(1 or more). x 0 P(x) 0.15 1 0.56 2 0.15 3 4 0.1 0.04 0.29 0.56 0.71 0.85
A student takes a single course during summer school and decides that the probability of obtaining each grade is shown in the following table Find the expected grade point average for this summer: Find E[X]. OUTCOME A B C D E X 4 3 2 1 0 P(X) 0.6 0.2 0.1 0.05 0.05
The following probability distribution shows the probability that a student graduates in that number of years. Find the probability that a student will graduate in at most 5 years. x P(x) 2 0.03 3 0.10 4 0.11 5 6 0.13 7+ 0.28
Need to show work
10. Let X -number of books purchased by students at your school during a given academic term. The probability distribution for X is given in the following table. X- number of books2 3 4 5 67 Probability 0.05 0.10 020 035 0.10 0.15 0.05 (a) A student is randomly chosen from the student population. What is the probability that the student purchased five or more books during the current academic term? Answer: 0.3 (b) What is...
) Salesw oman Sally used her previous years' sales records to construct the following probability distribution for the random variable X. The random variable X represents the number of sales per day Corresponding to each value of X is its probability. X P(x) 0 0.25 1 0.30 2 0.15 3 0.10 4 0.10 5 0.10 a) What is the probability that between 2 and 4 sales, inclusixe, will be made on any given day? b) Compute the mean or expected...