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azamat
3 years ago
13

A researcher asks students to rate their feeling toward an increase in tuition on a seven-point scale ranging from "opposed" to

"in favor of." Which type of measurement scale has the researcher used? A. Nominal B. Ordinal C. Interval D. Ratio
Mathematics
1 answer:
ElenaW [278]3 years ago
7 0

Answer: B

Step-by-step explanation:

In statistical terms ,ordinal scale contains things that you can place in order.

For example, hottest to coldest, lightest to heaviest, richest to poorest. Basically, if you can rank data by 1st, 2nd, 3rd place (and so on), then you have data that’s on an ordinal scale.

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A coin is to be tossed as many times as necessary to turn up one head. Thus the elements c of the sample space C are H, TH, TTH,
slavikrds [6]

Answer:

Step-by-step explanation:

As stated in the question, the probability to toss a coin and turn up heads in the first try is \frac{1}{2}, in the second is \frac{1}{4}, in the third is \frac{1}{8} and so on. Then, P(C) is given by the next sum:

P(C)=\sum^{\infty}_{n=1}(\frac{1}{2} )^{n}=1

This is a geometric series with factor \frac{1}{2}. Then is convergent to \frac{1}{1-\frac{1}{2}}-1=1.. With this we have proved that P(C)=1.

Now, observe that

P(H)=\frac{1}{2}, P(TH)=\frac{1}{4},P(TTH)=\frac{1}{8},P(TTTH)=\frac{1}{16},P(TTTTH)=\frac{1}{32},P(TTTTTH)=\frac{1}{64}.

Then

P(C1)=P(H)+P(TH)+P(TTH)+P(TTTH)+P(TTTTH)=\frac{1}{2} +\frac{1}{4} +\frac{1}{8} +\frac{1}{16} +\frac{1}{32} =\frac{31}{32}

P(C2)=P(TTTTH)+P(TTTTTH)=\frac{1}{32}+\frac{1}{64} =\frac{3}{64}

P(C1\cap C2)=P(TTTTH)=\frac{1}{32}

and

P(C1\cup C2)=P(H)+P(TH)+P(TTH)+P(TTTH)+P(TTTTH)+P(TTTTTH)=\frac{1}{2} +\frac{1}{4} +\frac{1}{8} +\frac{1}{16} +\frac{1}{32} +\frac{1}{64}=\frac{63}{64}

5 0
3 years ago
How many pairs of whole numbers have a sum of 12
MAXImum [283]
4 times 3 is 12

2 times 6 is 12
 
5 0
3 years ago
Read 2 more answers
HELP PLZZZZZZZ STANDARD FORM
liraira [26]

Answer:

-12n^{2} + 12

Step-by-step explanation:

h(n) = -4n + 4           (h o g) (n)

g(n) =  3n^{2} - 2

-4(3n^{2} - 2) + 4

-12n^{2} + 8 + 4

-12n^{2} + 12

7 0
2 years ago
If a right circular cone intersects a plane that runs parallel to the edge of the cone, the resulting curve will be a
gulaghasi [49]

If a right circular cone intersects a plane that runs parallel to the edge of the cone, the resulting curve will be a <u>parabola</u>.

A parabola is curved from one end and open from other end, therefore it would fit the best.

Hope I could help! :)

5 0
3 years ago
Read 2 more answers
An aeroplane has y seats. If all the seats are occupied and x people get off how many seats are still there
maxonik [38]
We need more context
4 0
3 years ago
Read 2 more answers
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