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Morgarella [4.7K]
3 years ago
9

A polling firm would like to estimate the proportion of registered Fort Collins voters who plan to vote in the upcoming city ele

ctions. Using voter registration records, they randomly sample 300 names and mail surveys to the selected voters' home addresses. Of the surveys they mail out, they receive 68 back. The survey has one question that reads as follows: "Which of the following describes how likely you are to vote next year in next year's mid-term elections: Definitely not voting, not likely to vote, likely to vote, or definitely voting?" For each question below, fill in the blank using the best answer from the pull-down menu. You have two attempts per question. The group of all registered voters in Fort Collins is the of interest. The survey respondent's answer to the italicized question above is the of interest. Suppose we calculate the proportion of voters from our sample who say they are definitely voting. This proportion is an example of a/an. Suppose we are interested in estimating the proportion of voters in Fort Collins who will definitely be voting. This proportion is an example of a/an: Each individual person in our sample is considered to be a/an: If the people who returned the surveys did so for a reason that is related to their likelihood of voting, then there might be in our sample. When we use the results of our sample to make a claim about all voters in Fort Collins, we are engaging in statistical
Mathematics
1 answer:
Scorpion4ik [409]3 years ago
6 0

Answer:

sdStep-by-step explanation:

d

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PLEASE HELP!!!!!!! A family has two cars. The first car has a fuel efficiency of 35 miles per gallon of gas and the second has a
Marianna [84]

Answer:

The answer to your question is car 1 = 30 gal and car 1 = 20 gal

Step-by-step explanation:

car 1 = a

car 2 = b

Efficiency of car 1 = 35 mi/gal

Efficiency for car 2 = 20 mi/gal

Total distance = 1450

Total gas consumption = 50 gal

Equations

                          35a + 20b = 1450            ------- (I)

                             a   +     b =  50               ------- (II)

Solve by elimination

Multiply equation II by -35

                          35a  + 20b  = 1450

                         -35a  - 35b   = -1750

Simplify

                            0    - 15b    =  -300

Solve for b

                                        b =  -300/-15

Result

                                        b = 20

Substitute b in equation II to find a

                               a +  20  = 50

Solve for a

                               a  = 50 -20

Result

                               a  = 30

4 0
3 years ago
What is the range of the data shown on the stem-and-leaf plot? <br>93<br> 43 <br>50<br> 48
notsponge [240]

Answer: C) 50

Step-by-step explanation:

The smallest number on the plot is 43.  The largest is 93.  The range of a chart is the largest number - the smallest number.  Thus, simply do 93-43 to get 50.

Hope it helps <3

5 0
3 years ago
Read 2 more answers
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Mice21 [21]
<span>the equation -2x² + 5x -3=0, we notice that the sum of the coefficient equals 0, -2+5-3=0, if such a case happens, the solution of the previous equation will be, x=1 (always) and x= c/a, a=-2, and c=-3, so x=-3/-2, finally, the answer is: the 2 in the denominator should be -2</span>
6 0
3 years ago
Read 2 more answers
Please help with this problem
HACTEHA [7]

Answer:

x = 2

Step-by-step explanation:

Multiply both sides by (x-5) and expand:

(x+4)/(x-5)*(x-5) = -2(x-5)

x+4 = -2x+10

Subtract 4 from both sides:

x+4-4 = -2x+10-4

x = -2x+6

Add 2x to both sides:

x+2x = -2x+6+2x

3x = 6

Divide both sides by 3:

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7 0
3 years ago
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valina [46]

Answer:

The probability is 0.683

Step-by-step explanation:

To calculate this, we shall be needing to calculate the z-scores of both temperatures

mathematically;

z-score = (x-mean)/SD

From the question mean = 78 and SD = 5

For 73

z-score = (73-78)/5 = -5/5 = -1

For 83

z-score = (83-78)/5 = 5/5 = 1

So the probability we want to calculate is within the following range of z-scores;

P(-1 <z <1 )

Mathematically, this is same as ;

P(z<1) - P(z<-1)

Using the normal distribution table;

P(-1<z<1) = 0.68269 which is approximately 0.683

3 0
4 years ago
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