(Solution) MATH225 Week 6 Assignment Estimating Sample Size for a Population Proportion
Question Suppose an automotive repair company wants to determine the current percentage of customers who keep up with regular vehicle maintenance. How many customers should the company survey in order…
(Solution) MATH225 Week 5 Assignment Understanding the Empirical Rule
Question A random sample of SAT scores has a sample mean of x¯=1060 and sample standard deviation of s=195. Use the Empirical Rule to estimate the approximate percentage of SAT scores that are…
(Solution) MATH225 Week 5 Assignment Evaluating Probability Using the Normal Distribution
Question A normal distribution is observed from the number of points per game for a certain basketball player. If the mean is 16 points and the standard deviation is 2 points, what is the…
(Solution) MATH225 Week 5 Assignment Central Limit Theorem for Means
Question A head librarian for a large city is looking at the overdue fees per user system-wide to determine if the library should extend its lending period. The average library…
(Solution) MATH225 Week 5 Assignment – Understanding Normal Distribution
Question The graph below shows the graphs of several normal distributions, labeled A, B, and C, on the same axis. Determine which normal distribution has the largest standard deviation. Ans; c You can…
(Solution) MATH225 Week 5 Assignment Applications of the Normal Distribution – Excel
Question The number of miles a motorcycle, X, will travel on one gallon of gasoline is modeled by a normal distribution with mean 44 and standard deviation 5. If Mike starts a journey with…
(Solution) MATH225 Week 5 Assignment Central Limit Theorem for Proportions
Question From recent census data, it is discovered that the proportion of the adults in the United States who are first generation Americans is 14%. For a random sample of size 500, what…
(Solution) MATH225 Week 2 Quiz
QUESTION 1 Alice sells boxes of candy at the baseball game and wants to know the mean number of boxes she sells. The numbers for the games so far are…
(Solution) MATH225 Week 4 Assignment – Evaluating Probability with the Binomial Distribution
Question A basketball player has a 0.689 probability of making a free throw. If the player shoots 18 free throws, what is the probability that she makes no more than 11 of them? Answer This probability…
(Solution) MATH225 Week 3 Assignment Standard Deviation
Question Find the sample variance of the following set of data:11, 4, 4, 6, 10. Ans: 11 Question Using the following set of data (the same as in the previous problem), find the sample…