statistic and probability

HYPOTHEIS TESTING ABOUT A POPULATION MEAN WHEN THE VARIANCE IS KNOWN Activity Find the appropriate rejection region in each case. 1, Hall > Pora = 0.05 2. Hutu 35 F = 3615 # 25;n = 25: a = 0,05 A research conducted on a certain company last year showed that 25% of the employees would rather would drink coffee than soft drinks during break time. The company has recently decided to give free coffee during break time. In the new research conducted this year, out of the 125 randomly sampled employees 28%% said that they would rather drink coffee than soft drinks. At 0.05 level of significance, is there. Sufficient evidence to suggest that the coffee drinkers have increased since the company has decided to give free coffee during break time? SCATTER PLOT Activity a. Construct a scatter plot b. Determine the direction of the straight line that the data points seem to follow, c. Determine the strength of correlation between the two variables depicted in each scatter plot 2 3 4 5 6 15 20 20 25 32 30 35 22 PEARSON PRODUCT MOMENT CORRELATION COEFFICIENT Activity The table below shows the time in hours spent by 6 students in playing video games a day before the test and the scores they got on the test. Student Time in hours Scores 65 1 15 75 0.5 84 3 GO 2.5 72Activity Express the null hypothesis Ho and the alternative hypothesis #, In notation form In the following scenarios. STATISTICS and PROBABILITY