To determine if alcohol consumption impacts students’ cognitive performance, ten students partake in an experiment on three consecutive Saturdays, with their time in seconds to solve a puzzle (time) recorded after a number of alcoholic drinks (drinks). The file Part1_Dataset7 displays the time to complete the same puzzle for the randomly assigned drink options: no alcohol on one of the Saturdays (zero standard drinks, coded 1), one standard drink of alcohol on another Saturday (coded 2), and five standard drinks of alcohol on another (coded 3). Hint. The variable “student” is the blocking variable. Based on the information given, answer the following questions. (a) At the 5% level of significance, is blocking effective? Follow all the necessary steps to perform the test and verify your results using Excel/PHStat. student drinks time 1 1 156 2 1 166 3 1 148 4 1 160 5 1 139 6 1 151 7 1 158 8 1 167 9 1 142 10 1 219 1 2 160 2 2 165 3 2 184 4 2 192 5 2 197 6 2 172 7 2 189 8 2 179 9 2 200 10 2 193 1 3 236 2 3 238 3 3 257 4 3 242 5 3 282 6 3 253 7 3 270 8 3 256 9 3 267 10 3 259

In an experiment testing the effects of alcohol on performance, Group A receives 3 nonalcoholic beers, Group B receives 6 nonalcoholic beers, Group C receives 3 alcoholic beers, and Group D receives 6 alcoholic beers. The independent variable(s) in this experiment is/areQuestion 8Answera.number of drinks.b.level of performance after drinking.c.amount of alcohol.d.amount of alcohol and number of drinks.

10 university students volunteered to participate in a study investigating the effect alcohol has on reaction time. Each student performed a reaction test. They then consumed 2 standard alcholic drinks. 20 mins after consumption they performed the same reaction test.The results from this study are going to be used to do a t-test of differences.Use the drop-down menus to identify if the following conditions for this test are satisfied or not.Paired data. AnswerThe sample is representative of the population. AnswerThe sampling distribution is normal.

An investigator interviewed 100 students to determine the performance of three drinks: milk, coffee and tea. The investigator reported that 10 students take all three drinks milk, coffee and tea; 20 students take milk and coffee; 25 students take milk and tea; 20 students take coffee and tea; 12 students take milk only; 5 students take coffee only and 8 student take tea only. Then the number of students who did not take any of three drinks is  10 20 25 30

A group of 75 college students from a certain liberal arts college were randomly sampled and asked about the number of alcoholic drinks they have in a typical week. The file containing the data is linked below. The purpose of this study was to compare the drinking habits of the students at the college to the drinking habits of college students in general. In particular, the dean of students, who initiated this study, would like to check whether the mean number of alcoholic drinks that students at his college have in a typical week differs from the mean of U.S. college students in general, which is estimated to be 4.73.Let μ be the mean number of alcoholic beverages that students in the college drink in a typical week. State the hypotheses that are being tested in this problem.

Other variables created using the responses from the students who participated in the study include:age_group (the age of the student in years: 18 to 20, 21 to 22, 23 to 25, 26 or older)country (the location of each student: Australia, US)degree_specialisation (the major or specialisation for their degree: psychology, other)time_since_last_drink (the number of hours since the student last had a drink)Consider what types of analysis and hypothesis tests would be appropriate to use with these variables.Use the information provided to decide if each of the following statements are TRUE or FALSE.Analysis of the variable degree_specialisation would involve proportions. Analysis of the variable age_groups would involve means. A two-sided alternative hypothesis based on these variables could be “The underlying mean time_since_last_drink is higher for students from Australia compared to students from the US”.