What percentage of the rats navigated the maze in less than 5.5 minutes? A. 21% B. 60% C. 68% D. 70% E. 84%

A case-control study was conducted to examine the association between lung cancer and smoking in men. The case group contains 500 patients, who were diagnosed with lung cancer. Five hundred age-matched patients were recruited as controls. The study found that 50% of cases were regular smoking and the proportion is 20% among controls. a. Create a 2x2 table based on the given information

Data was collected for a sample of organic snacks. The amount of sugar (in mg) in each snack is summarized in the histogram below. Which statement below best describes the meaning of the second bin (or class)? A. There were 65 snacks that contained 2 milligrams of sugar. B. There were 2 snacks that contained between 65 and 70 milligrams of sugar. C. There were 2 snacks that contained 65 milligrams of sugar. D. There were between 65 and 70 snacks that contained 2 milligrams of sugar. E. There were 2 snacks that contained 70 milligrams of sugar. F. There were 70 snacks that contained 2 milligrams of sugar.

State H0 and what is H1 for all of them a, b and c a) The marketing researcher would like to find out whether consumers from different regions evaluate brand A differently when they see the brand name b) The marketing researcher would like to find out whether consumers from the south region and the north region evaluate brand B differently when they see the brand name c. The data file contains four taste evaluations. The taste evaluations were measured on a scale from 1 to 10 (with 10 the highest evaluation). Brand equity of one brand for one respondent is the difference of branded score and unbranded score of that brand evaluated by the respondent. The marketing researcher would like to find out whether brands A and B have brand equity, in other words, whether the evaluation of brand A (B) is different when consumers can see the brand name vs. when they cannot see the brand name.

Brooke’s current grades in Geometry are the following.  Is it possible for Brooke to earn a B (80%) in the class after he takes the EOC?  Show your work and explain your answer. Brooke’s grades: Grading System: Tests: 76, 71, 68, 73, 77 Quizzes: 66, 70, 71, 65, 70 Daily Work: 71% EOC: ? Tests: 40% Quizzes: 25% Daily Work: 15% EOC: 20%

solve for UCLp

A biologist wants to estimate proportion of humans who have a certain gene. He wants to be 95% confident that the true proportion is within 5% of the sample proportion. What should his sample size be? Select one: а. 385 b. More information is required. C. 1537 d. 384 e. 96

A comparative Psychologist tests the amount of time it takes for mice to complete a maze as their dependent variable.  What type of data would this be? a. ratio b. interval c. ordinal d. nominal