Advanced probability and Statistics
Not what you're looking for?
1.Suppose a normal distribution has u =1.4,and o =0.2, calculate the z -score f or x= 3.5
2.What is the mode of the data set 23, 44, 22, 23, 23, 44, 23, 55?
3. Give the following data set
50, 40, 33, 37, 60
a. Find the mean, median and mode
b. Find the standard deviation
4. Suppose a normal distribution has
u = 1.5 and o = 0.3
Find the z-score and the associated area under the standard normal curve for the following values of x.
a. 2.3
b. 1.7
c. 2
d. 1.9
e. 2.1
5. A campus club sells 500 raffle tickets at a price of $2 each. The raffle offers one $100 dollar prize, two $50 prizes, and five $25 prizes. What is the expected value of a raffle ticket? (Apply the concepts of Probability Distribution and expected value, as appropriate)
6. Calculate the standard deviation of the following set of scores: 45, 52, 45, 40
7. Determine the probability that a randomly selected data value will fall within 1.67 standard deviations of the mean.
Which one? 45.25%,90.5%,85.5%,or30.25%
Purchase this Solution
Solution Summary
detailed solutions to the problems is given.
Purchase this Solution
Free BrainMass Quizzes
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.