Assuming a population standard deviation of 7.8 years, does this seem to indicate that the life span today is lesser than 70 years? In this case, what parameters should the researcher consider? 3. A survey conducted the college Null Hypothesis: students in their study stated that cell Alternative Hypothesis: phone owners received an average of 65 texts every day. What parameter should these students consider proving this claim? Assessment 2. Complete the following hypothesis by providing the appropriate symbol. 1. We want to test if college students take less than ve years to graduate from college, on the average. Ho: [if 5 Ha: [if 5 2.. The school wants to test whether the mean grade point average in the Philippines colleges is different from 2.0 {out of 4.0). HoiiiQ Haiuiz 3. The owner of a Pepsi Cola that sells a particular bottled juice claims that average capacity of a bottle of their product is 355 ml. Is the claim true? Ho:u7355 Ha:ui355 4. A study of every national park's sales receipts for August shows they brought in an average of more than ten million dollars in revenue. Ho: \"_ 10,000,0000 Hui u_ 10,000,000 5. A researcher wants to estimate the average height of women aged 20 years old. From a simple random sample of 45 women, the researcher obtains a sample mean height of 63.9 inches. Hal n 63.9 FL: :1 63.9