TEST 1. TRUE or FALSE (10 points) Directions: Read and analyze each ltem carefully. Choose T, if the statement ls TRUE. Choose F, if otherwise. SHOW YOUR SOLUTIONS. (Zpte each) 1. When the degrees of freedom increases. the t distribution approaches the normal distribution. 2. When you have a small degree of freedom, the t distribution ls considerably more varied than the normal distribution. __3. When there are more than 30 degrees of freedom, t distribution Is used. 4. It is a symmetric distribution that Is peaked at the center, and approaches the horizontal axis the farther from the center of the distribution the t value is 2 distribution. 5. Population proportion Is a part of a population with a particular attribute. expressed as a fraction, decimal or percentage of the whole population. TEST 1!. MULTIPLE CHOICE ( 50 points) Directions: Read and analyze each item carefully. Write the letter that corresponds to your answer on the any paper before you transfer It In google form. If the correct answer is not within the choices, choose letter E. SHOW YOUR SOLUTIONS. (zpte each) 1. A rule for calculating two numbers, L1 and L1, which can be used to generate an interval of real numbers that we hope contains the true value of the parameter is called . A. Point Estimate C. Point Estimation B. Interval Estimation D. Interval Estimate 2. A number of the boarding llne separating sample statistics that are likely to occur from those that are not likely to occur ls called A. Critical Value C. Condence Level B. Confidence Interval D. Alpha ( o ) 3. It is some small probability that the method of constructing condence intervals will fail. A. Critical Value C. Condence Level B. Condence Interval D. Alpha ( a ) 4. It is a symmetric distribution but have fatter tails than normal. A. Standard Distribution C. Standard Normal Distribution B. T distribution D. 2 distribution FOR NUMBERS 5-10. Determine the t-value corresponding to each level of condence and degrees of freedom 5. 95% n: 10 A. 2.228 C. 2.821 B. 2.262 D. 2.764 6. 90 % l'|= 14 A. 1.771 C. 1.350 B. 1.761 D. 1.345 7. 99% n= 26 A. 2.485 C 2.779 B. 2.479 D 2.787 8. u = 5% n= 7 A. 2.365 C 2.447 B. 2.998 D. 3.143 9. u = 10% l'l= 30 A. 1.699 C 1.697 B. 1.311 D 1.310 10. u = 1% n= 18 A. 2.567 C 2.552 B. 2.898 D 2.878