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kodGreya [7K]
3 years ago
6

Dtermine whether the following value is a continuous random​ variable, discrete random​ variable, or not a random variable.

Mathematics
1 answer:
Vikki [24]3 years ago
8 0

Answer:

a) Discrete random variable

b) Not a random variable

c) Discrete random variable

d) Continuous random variable

e) Discrete random variable

f) Continuous random variable

Step-by-step explanation:

a) This is discrete because we can quantify it and it can not take a decimal number and has true zero. That is, zero means absence.

b) This is not a random variable because hair color is quality, thus it cannot be quantify.

c) This is discrete because we can quantify it and it can not take a decimal number and has true zero. That is, zero means absence.

d) This is continuous random variable because we can quantify it, it can take decimal number and has no true zero. For instance, 0 degree Celsius does not implies absence of temperature. Or that we say someone is a dwarf does not implies he/she has no height even though the measure scale may read zero.

e) This is discrete because we can quantify it and it can not take a decimal number and has true zero. That is, zero means absence.

f) This is continuous random variable because we can quantify it, it can take decimal number and has no true zero. For instance, 00:00 GMT does not implies absence of time.

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Answer:

24

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If r^n=a, then which of the following are true statements? Check all that apply.
Vanyuwa [196]
A. This is correct. When you transfer n to the other side, that would be the reciprocal power of a.

b. This is incorrect, because this contradicts with choice a.

c. This is correct. When a number is raised to a "1/n" fraction, that is equivalent to the nth root of the number.

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3 0
3 years ago
Use the normal distribution of SAT critical reading scores for which the mean is 502 and the standard deviation is 116. Assume t
PSYCHO15rus [73]

Answer:

(a) 93.19%

(b) 267.3

Step-by-step explanation:

The population mean and standard deviation are given as 502 and 116 respectively.

Consider, <em>X</em> be the random variable that shows the SAT critical reading score is normally distributed.

(a) The percent of the SAT verbal scores are less than 675 can be calculated as:

P(X

Thus, the required percentage is 93.19%

(b)

The number of SAT verbal scores that are expected to be greater than 575 can be calculated as:

P(X>575)=P(\frac{x-502}{116}>\frac{575-502}{116}\\P(X>575)=P(Z>\frac{575-502}{116})\\P(X>575)=P(Z>0.6293)\\P(X>575)=0.2673

So,

Out of 1000 randomly selected SAT verbal scores, 1000(0.2673) = 267.3 are expected to have greater than 575.

8 0
2 years ago
Need help asap!!!!!!!!!!!!!!!!!!!
ololo11 [35]
Okay so this is how I got the answer.... I didn’t lol
4 0
2 years ago
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