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1) A set of 50 data values has a mean of 15 and a variance of 25. Find the standard score of a data value = 30.
Following are the American College Test (ACT) scores attained by the 25 members of a local high school graduating class:
21
24
23
17
31
19
20
25
16
28
14
18
Find P99, P90, and P80 for the ACT scores. [Hint: Use nk/100 to find the location in the ordered data for each percentile.] All work must be show in order to get your assignment graded
2) How is a "discrete" variable different from a "continuous" variable? Please give one example of each, and describe how these examples differ from one another.
Identify what makes flipping a coin and keeping track of tails a binomial experiment .
3)If the random variable z is the standard normal score and a > 0, is it true that P(z < -a) = P(z > a)? Why or why not?Then find the z-score for the standard normal distribution where:
Area=0.32 in the left tail.
MATH1550H: Assignment: Question: A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..
MATH1550H: Assignment: Question: what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?
MATH1550H: Assignment: Question: Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form
MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?
MATH1550H: Assignment: Questions: Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.
Caselet on McDonald’s vs. Burger King - Waiting time
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Problems on Sampling Variability and Standard Error and Confidence Intervals
Estimate the population mean
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
Find out the probability
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