Need answer for number 3 with all steps please

6'78. DATA: 71.4. 751. 664 789. 813. 779. 698 9P6. 753. 834. 693. 302. ' .. 3. The mean weight (lbs) of discarded plastic from a sample of 62 households is 1. 911 lbs. The population (ALL SUCH households) standard deviation is L05 ' lbs. Test. at= =0. 04, the claim that the mean weight of discarded plastic from the population of households is greater than 1.8 lbs ' - 4. Researchers collected a simple random sample of the times that 31 college students were required to earn their bachelor's degrees. The sample has a mean of 4. 3 years and a standard deviation of 2.2 years. Use a 0. 05 signicance level to test the claim that the mean time for all college students is ' than 4.5 years. ' - 5. The National Highways Trafc Safety Administration conducted crash tests of child booster seals for cars. Listed below are results from those 1:53 the measurements given in hit: (standard head injury condition units). The safety requirement is that the hit: measurement should be less than 1000 hf -. Ii 11L Ia