Use SAS PROGRAM

1. Find the following values: (i) Zo.3015 (ii) 20.6985 (iii) 20.002 (iv) 11:0.025 (V) -1 1:0.025 (vi) 11:0.975 2. Applied statistics can be divided into descriptive statistics and inferential statistics. Define the 2 statistics mentioned above. 3. Define following : (i) variable, (ii) experimental unit, (iii) a single measurement 4. For any hypothesis test: a) Define 2-sided and 1-sided hypotheses and give the steps involved in their testing. b) What are the two types of error that may be made? 5. Consider a normal population distribution with the value of o known. a) What is the confidence level for the interval (i) xt1.150/Vn, (ii) x12.580, (iii) x+2.650/Vn. b) What value of z in the confidence interval formula (x - Za/2 8/ Vn, x + 2 x /2 0/ Vn) results in a confidence level of (i) 78.88% (ii) 99.20% (iii) 75.40% c) Would a 90% C.I. be narrower or wider than the 99.20% C.I. in b)? Explain why