Exam 11: Graphs

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Suppose that people's heights (in centimeters) are normally distributed, with a mean of 170 and a standard deviation of 5. We find the heights of 100 people. How many would you expect to be taller than 165 cm? Please, round your answer to the nearest integer. __________ people

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Suppose that the 1999 monthly cost for health care for an employee and two dependents is given in the following table. "> cellpadding ="0" cellspacing ="0" width =84% " border =0">\text { cellpadding }=" 0 " \text { cellspacing }=" 0 " \text { width }=84 \% \text { " border }=0 "> Provider Cost Maxicare \ 425.02 Cigna \ 429.03 Health Net \ 434.87 Pacific Care \ 444.83 Health Plan of the Redwoods \ 448.32 Kaiser \ 454.11 Aetna U.S. Healthcare \ 457.33 Blue Shield HMO \ 460.45 Omni Healthcare \ 469.25 Lifeguard \ 474.92 What is the mode?

(Multiple Choice)
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In plotting a point (x,y)( x , y ) , the y -component is always __________.

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Find the functional value h(−7)h ( - 7 ) if h(x)=4x−3h ( x ) = 4 x - 3 h(−7)=h ( - 7 ) = __________

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Find the range and mean of the data set. 74,75,94,94,9874,75,94,94,98 range: __________ mean: __________

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Find the class ranking. Round your answer to the nearest whole number, if necessary. 74th percentile out of 41

(Multiple Choice)
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Consider a class of examination scores. {91,85,82,76,72,66,64,62,61,55,45,36}\{ 91,85,82,76,72,66,64,62,61,55,45,36 \} What is the percentile rank of a score of 8282 ? Round your answer to the nearest whole percentile, if necessary.

(Multiple Choice)
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How many points lie on a line? __________ (Answer one , two or infinite ) How many points do you need to plot in order to determine a line? __________ (Answer one , two or infinite )

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Which graph might represent a compound interest equation?

(Multiple Choice)
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Find the three measures of central tendency (the mean, median, and mode). 7,11,17,18,227,11,17,18,22

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Consider the following salaries for the executives of a certain company. cellpadding ="0 " cellspacing ="0 " width ="63\% " border="0"> Position Salary President \ 250,000 1st VP \ 120,000 2nd VP \ 110,000 Supervising manager \ 50,000 Accounting manager \ 50,000 Personnel manager \ 50,000 Department manager \ 28,000 Department manager \ 28,000 What is the mode? If there is more than one mode, answer bimodal . $ __________

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Graph the inequality. y>2x−3y > 2 x - 3  Graph the inequality.  y > 2 x - 3

(Essay)
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Plot five points, each of which has 55 as the second component. Connect the plotted points. Which graph could be a correct graph?

(Multiple Choice)
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Choose the correct set of points that prepares the graph of the equation y=2x2y = 2 x ^ { 2 } .

(Multiple Choice)
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Suppose that the annual rainfall in Ferndale, California, is known to be normally distributed, with a mean of 39.5 inches and a standard deviation of 3.5 inches. About 2.3% of the time, the annual rainfall will exceed how many inches?

(Multiple Choice)
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Suppose that people's heights (in centimeters) are normally distributed, with a mean of 170 and a standard deviation of 5. What is the probability that a person selected at random is taller than 175 cm? Please, round your answer to three decimal places, if necessary.

(Multiple Choice)
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The salaries of employees of the Moe D. Lawn Landscaping Company are: cellpadding="0" cellspacing ="0" width ="52\%" border ="0"> Salary Frequency \ 23,000 1 \ 27,000 5 \ 31,000 3 \ 44,000 5 Find the variance rounded to the nearest thousand dollars and the standard deviation rounded to the nearest dollar. variance: __________ standard deviation: __________

(Short Answer)
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Sketch the graph of the equation. y=5x2y = 5 x ^ { 2 }

(Multiple Choice)
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Find the functional value h(s)h ( s ) if h(x)=4x−8h ( x ) = 4 x - 8

(Multiple Choice)
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Find three ordered pairs that satisfy the equation. y=x+7y = x + 7

(Multiple Choice)
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