TT1WF11SOLN - SOLUTIONS TERM TEST 1 PART I WHITE FALL 11...

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Page 1 SOLUTIONS TERM TEST 1 PART I WHITE FALL 11 Each question in this part has exactly one correct answer. Remember CIRCLE your answer on this questionnaire and clearly indicate your answer on the computer score card. 1. Assume that for a set of data points that exhibits a linear pattern 8œ& ß ÐB ß C Ñ 33  3œ" 3œ" 3œ" 3œ" 88 8 8 3 3 3 # B œ %!ß C œ #!!ß B œ %!!ß B C œ )!!Þ and Use the formula 8,  B 7 œ C  3œ" 3œ" 3œ" 3œ" 3œ" 8 3 3 # B, B7œ B C which one of the following is the Least Squares Line that fits these data points. Cœ7B, (B) (C) (A) C œ "!B  "#! C œ "!B  %! C œ "!B  "#! (D) (E) C œ "!B  "#! C œ "!B  %! Solution 8,  B 7 œ C Ê &,  %!7 œ #!! ÞÞÞ " 3œ" 3œ"  3œ" 3œ" 3œ" 888 3 3 # B ,  B 7 œ B C Ê %!,  %!!7 œ )!! ÞÞÞ # M u l t i p l e 3 ) ‚ " Ê %!,  $#!7 œ "'!! ÞÞÞ C o m p u t e 3 : #  )!7 œ )!! Ê 7 œ "! Substitute in and solve for " , À &,  %!Ð"!Ñ œ #!! Ê &,%!! œ #!! Least Squares Line: Ê &, œ '!! Ê , œ "#! C œ "!B  "#! (A) 2 A firm offers two salary options. In Option the monthly salary is $ , plus % of the monthly Þ E EÐBÑ $ !!! "! net profits . In Option the monthly salary is $ , plus % of the monthly net profit that is B F FÐBÑ $ &!! , greater than $ , . If the two salary options are equal when the net profit is $90,000, then the percent for %! !!! Option B, %, equals , (A) % % (B) % % (C) % % % % (E) % % " % " & " ' " ( " ) (D) SOLUTION EÐBÑ œ $!!!  ! "B FÐBÑ œ . and $&!! B Ÿ %!ß !!! $&!!  Þ!",ÐB%!ß !!!Ñ B  %!ß !!! if if For if B œ *!ß !!! EÐ*!ß !!!Ñ œ FÐ*!ß !!!Ñ . $!!!  ! "Ð*!ß !!!Ñ œ $&!!  Þ!",Ð*!ß !!!%!ß !!!Ñ $!!!  *ß !!! œ $&!!  Þ!",Ð&!ß !!!Ñ Ê "#!!! œ $&!!  &!!, Ê )&!! œ &!!, % Ê,œ"( (D) 3. Let and then which of the following is FALSE? 0ÐBÑ œ / 1ÐBÑ œ B  " B $ (A) Ð0  1ÑÐBÑ œ /  B  " B $ (B) Domain of ( ) = ( , 1) ( 1, + ) 0 1 ∞  ∪  (C) Ð0 ‰ 1ÑÐBÑ œ / B" $ ( (D) Ð1 ‰ 1Ñ BÑ œ B  # * SOLUTION 1Ð1ÐBÑÑ œ 1ÐB "Ñ œ ÐB "Ñ  " $$ $ (E) Ð01ÑÐBÑ œ B /  / BB $
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Page 2 4. If and then which of the following correctly completes this statement. 0ÐBÑ œ =38Ð Ñ 1ÐBÑ œ =38Ð Ñ BB (( ( 1 The basic period of is ______ and the graph of is the graph of shifted to the left ______.
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TT1WF11SOLN - SOLUTIONS TERM TEST 1 PART I WHITE FALL 11...

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