A. Read and understand the given statements below. In your notebook, write H, if the given statement in every number is an alternative hypothesis. Otherwise, just leave it blank. In 2015, it was recorded that around 34% of the population in 2015 were not married. A researcher surveyed a random sample of 500 couples. He found that 18% of them were living together but unmarried. Test at 5% significance level if the current percentage of unmarried couples is different from 34%. 1. The current percentage of unmarried couples is different from 34%. 2. The current percentage of unmarried couples is 34%. An average construction worker hourly rate pay in the Philippines is Php 62.50 with a standard deviation of Php 6.01. A random sample of 20 manufacturing workers were asked on their hourly rate and found that they had an average of Php 50 hourly rate pay with a standard deviation of Php 5.00. Construct a 90% confidence interval for the difference between the average hourly rate for construction workers and the average hourly rate for manufacturing workers. 3. There is a significant difference between the average hourly rate for construction workers and the average hourly rate for manufacturing workers. 4. There is no significant difference between the average hourly rate for construction workers and the average hourly rate for manufacturing workers. A chemist invented an additive to increase the lifespan of rechargeable battery. The said additive will extend on average the battery's lifespan to 48 months. 5. The average lifespan extension of rechargeable battery is not 48 months. 6. The average lifespan extension of rechargeable battery is 48 months. B. Read and understand the statements below. In your notebook, write the mathematical symbol of the alternative hypothesis of the given statement. 1. The average number of years to finish basic education is not 14 years. 2. At least 40% of private students transferred to public schools during the COVID 19 pandemic. 3. The mean expenses of a family during the COVID 19 pandemic increased at most by 15%. 4. Thirty-five percent of senior high school students enrolled to a track/ strand because of peer pressure. 5. During the COVID 19 pandemic, 8% of COVID 19 cases in the country were confirmed death cases. 6. The mean number of new normal learning facilities a school has is not more than five. 7. During the COVID 19 pandemic, more than half of the residents in cities decided to stay in their remote provinces. 8. Forty-five percent of the students attended online learning delivery mode. 9. At most, 55% of the public-school teachers were advised to stay at home during the opening of classes. 10.At least 70% of the public schools used blended learning delivery mode