I need help pls.. please help me to answer them all correctly for an upvote and positive ratings, thank you so much:)

NOTE: There is no references in my module maam/sir. so pls do understand. thank you

ACTIVITY Shit: I 'l WRITTEN! WORK NO. 1 A. Identifying the Parameter identify the given parameter in the following problems. 1, A teacher wants 1:0 know if listening to country music improves the performance of pupils. A' class of 75 Grade 7 learners was used in the experiment. The mean and standard deviation of the class was 88 and 6, respectively. A previous study revealed that the population mean is .34 with a standard deviation of 9. Test the claim at o = 0.01. 2. The treasurer of a certain university claims that the mean monthly salary of their college professor is Php 120435 with a standard deviation of Php 5500. A researcher takes a random sample of 80 college professors were found to have a mean monthly salary of Php 19055.00 laries than the rest? Test the claim at -u'-'= 0.05. the 80 college professors have lower sa _ 3. The hospital record shows that the mean weight of newly born babies is 7 lbs, With the standard deviation of 0.75 lbs. A researcher takes a sample of 55 newly born babies and found to have a mean weight of 6.73 lbs. Use 0.05 level of signicance. B. Ho and H1! Formulate: a null and alternative hypothesis for each of the following. Write them in symbols. 1. The average age of all the identiiied stratum of senior citizens in a remote area is 92 V3\"?- 2. The average number of hours that it takes an eightyear-old child to learn a certain task in a specic subject is more than 0.3? hour. 3. The average TV viewing time of all ve-year old children is 4 hours daily. 4. The average weight loss for a sample of people who exercise 45 minutes is less than 4.8 kilograms. ' ' . 5. The average monthly income of Filipino families who belong to low-inQQWG. New\" '8 Php 9000. ' . {so at T. - 95'1\""; per day for 5 weeks