Probability and Statistics
Lesson 3.2 Practice Exercises
1. Sampling Mall Shoppers - You...
Mathematics, 31.03.2020 22:20 sbailey0962
Probability and Statistics
Lesson 3.2 Practice Exercises
1. Sampling Mall Shoppers - You have probably seen the mall interviewer, clipboard in hand,
approaching people passing by. Explain why even a large sample of mall shoppers would not
provide a trustworthy estimate of the current unemployment rate in the city where the mall is
located. Is the proportion of unemployed people in the sample likely greater than or less than the
proportion of all people who are unemployed?
Answers: 2
Mathematics, 21.06.2019 16:40, sandygarcia65
What is the solution of the systems of equations? y=2/3x+3 x=-2
Answers: 2
Mathematics, 21.06.2019 22:30, CatelynBGray
Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%
Answers: 1
Mathematics, 21.06.2019 23:50, yarrito20011307
4. (10.03 mc) the equation of line cd is y = −2x − 2. write an equation of a line parallel to line cd in slope-intercept form that contains point (4, 5). (4 points) y = −2x + 13 y = negative 1 over 2 x + 7 y = negative 1 over 2 x + 3 − 2x − 3
Answers: 2
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