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Mandarinka [93]
3 years ago
13

Probability is a measure of how likely an event is to occur. write the probability of the following statements:

Mathematics
1 answer:
attashe74 [19]3 years ago
7 0

Step-by-step explanation:

This is a probability related question, let the event be E

We know that the likelihood of an event happening is given as

Pr(E)=1

if an event will not occur the probability is

Pr(E)=0

a. This event is impossible: Pr(E)=0

b.This event will occur more often than not, but is not extremely likely:  

Pr(E)=0<E>0.5

c.This event is extremely unlikely, but it will occur once in a while in a long sequence of trials:

Pr(E)=0<E<0.5

d.This event will occur for sure: Pr(E)=0

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Identify the fraction as proper, improper, or mixed.<br><br> 7/3
Damm [24]

Answer:

improper

Step-by-step explanation:

a proper fraction is a fraction under 1 like 3/4

a mixed number is a whole number and fraction like 2 1/3

and a improper fraction is a fraction with a numerator greater the denominator

5 0
3 years ago
Read 2 more answers
In a study to establish the absolute threshold of hearing, 80 male college freshmen were each seated in a soundproof room and a
Norma-Jean [14]

Answer:

Step-by-step explanation:

Hello!

To study the threshold of hering the researcher took a random sample of 80 male college freshmen.

The students underwent an audiometry test where a tome was played and they had to press a button when they detected it.  The researcher recorded the lowest stimulus level at which the tone was detected obtaining a sample mean of X[bar]= 22.2 dB and a standard deviation of S= 2.1 dB

To estimate the population mean, since we don't have information about the variable distribution but the sample size is greater than 30, you can use the approximation of the standard normal distribution:

X[bar] ± Z_{1-\alpha /2} * \frac{S}{\sqrt{n} }

Where the semiamplitude or margin of error of the interval is:

d= Z_{1-\alpha /2} * \frac{S}{\sqrt{n} }

Using a 95% level Z_{0.975}= 1.965

d= 1.965 * \frac{2.1}{\sqrt{80} }

d= 0.46

The point estimate of the population mean of the threshold of hearing for male college freshmen is X[bar]= 22.2 db

And the estimation using a 95%CI is [21.74;22.66]

I hope this helps!

8 0
3 years ago
Colin invest in £5000 into his bank account. He receives 10% per year simple interest. How much will Colin have after 3 years?
pav-90 [236]

Answer:

£6655

Step-by-step explanation:

Given data

Principal=  £5000

Rate= 10%

Time = 3 years

FInal Amount A=???

The expression for the compound interest is given as

A=P(1+r)^t

substitute

A=5000(1+0.1)^3

A=5000(1.1)^3

A=5000*1.331

A= £6655

Hence the final Amount is  £6655

5 0
3 years ago
2605 rounded to the nearest hundred
Fittoniya [83]
It would round to 2600
8 0
3 years ago
What is the common difference between the terms in the following sequence?
Ipatiy [6.2K]

Answer:

-6

Step-by-step explanation:

17-6=11

11-6=5

5-6=-1

-1-6=-7

6 0
2 years ago
Read 2 more answers
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