5) Suppose we have NSU student's weight data. Assume this data is normally distributed with mean 65 kg and variance 3 kg

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5 Suppose We Have Nsu Student S Weight Data Assume This Data Is Normally Distributed With Mean 65 Kg And Variance 3 Kg 1 (407.33 KiB) Viewed 106 times

5) Suppose we have NSU student's weight data. Assume this data is normally distributed with mean 65 kg and variance 3 kg. a) Calculate the probability that this weight is between 62 kg to 70 kg. b) Calculate the probability that this weight is greater than 63 kg. 6) Suppose we want to test is human body's normal temperature really lower than 99 degrees. To test this 61 samples were collected whose ages were from 20 years to years. Sample mean = 98.7 degrees and sample standard deviation = 0.5 degrees. Test this at 1% level of significance. 7) Do people gain or lose weight when they quit smoking? To check this 4 people’s data were collected who are quit smoking for one years. The data are given below: After smoking Before smoking 70 kg 67 kg 76 kg 75 kg 67 kg 67 kg 70 kg 73 kg Test this at 5% level of significance.