Your answer is INCORRECT Identify the most appropriate test to use for the

# Your answer is incorrect identify the most

• Test Prep
• 10
• 100% (11) 11 out of 11 people found this document helpful

This preview shows page 3 - 6 out of 10 pages.

Question 6Your answer is INCORRECT.Identify the most appropriate test to use for the following situation:A private and a public university are located in the same city. For the private university, 1046 alumniwere surveyed and 653 said that they attended at least one class reunion. For the public university, 791out of 1327 sampled alumni claimed they have attended at least one class reunion. Is the difference inthe sample proportions statistically significant? a) Two sample ztest for meansb) Two sample ztest for proportionsc) One sample ttest for meansd) One sample ztest for meanse) Matched pairs ttest for meansf) One sample ztest for proportionsg) Two sample ttest for means Question 7Your answer is CORRECT.A random sample of 121 cans of fruit nectar is drawn from among all cans produced in a run. Priorexperience has shown that the distribution of the contents has a mean of 14.25 ounces and a standarddeviation of 2.17 ounce. What is the probability that the average contents of the 121 sample cans isless than 13.99 ounces?
12/12/17, 12 : 08 AM Print Test Page 4 of 10 Question 8Your answer is CORRECT.A random variable Xhas a probability distribution as follows:X0 1 2 P(X) 3k4k5k3k4What is P(X < 3)? 3 4 k Question 9Your answer is CORRECT.Find a value of so that cP(Zc) = 0.620.8561.1590.305 . a) b) c) d) e) Question 10 Your answer is CORRECT. 16 19 1 19 12 19 15 19 0.762 0.647
12/12/17, 12 : 08 AM Print Test Page 5 of 10 The following table displays the results of a sample of 100 in which the subjects indicated theirfavorite ice cream of three listed. The data are organized by favorite ice cream and age group. What isthe probability that a person chosen at random will be under 20 years old if he or she favors chocolate?Age Chocolate Vanilla Strawberry Over 40 12 8 20-40 13 9 Under 20 13 19 10 13 3