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klio [65]
2 years ago
8

​Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random sample of 125 adult​ males,

the mean pulse rate is 68.3 bpm and the standard deviation is 11.4 bpm. Find the value of the test statistic.
Mathematics
1 answer:
ASHA 777 [7]2 years ago
3 0

Answer:

0.6865

Step-by-step explanation:

test statistic is given by the formula

test statistic =\frac{\bar{x}-\mu }{\frac{\sigma }{\sqrt{n}}}

where \bar{x}= mean of the sample

μ= mean

n= sample space

σ= standard deviation

we have given mean of sample  \bar{x} =69

mean μ=68.3

σ=11.4

sample space=125

putting all these value in formula of test statistic

test statistic=\frac{69-68.3}{\frac{11.4}{\sqrt{125}}}

=0.6865

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h=time half life is (same units as time)

let's use days as the units of time


we are given
initial amount=1gram
final amount=0.3gram
time=4 days

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0.3=1( \frac{1}{2})^ \frac{4}{h}
solve for h
0.3=( \frac{1}{2})^ \frac{4}{h}
take the ln of both sides
ln(0.3)=ln( \frac{1}{2})^ \frac{4}{h}
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times both sides by h
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What is segment LO to Triangle LMN?​
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Given that an adult likes soccer, what is the probability the adult is aged 18–30? 8.1% 18.1% 24.5% 44.4%
dsp73

The probability that an adult likes soccer is aged between  18–30 will be 44.4%.

We have an adult who likes soccer.

We have to determine the probability the adult is aged 18–30.

<h3>What is Probability?</h3>

The formula to calculate the probability of occurrence of an event 'A' can be written as -  

P(A)  =  \frac{n(A)}{n(S)}

where -

n(A) = Number of outcomes favorable to event A.

n(S) = Total number of outcomes.

According to question, we have an adult likes soccer.

The answer to this question is based on the hypothesis that the adults between 18 - 30 are highly energetic. To be more precisely - the adults in the range 18 - 24 and 24 - 30 are highly energetic and full of stamina. Above the age 30, the number of adults who like soccer will start to decrease and will hit nearly zero between the age range of 55 - 65 as the adults in this age group found it very difficult to even walk.

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The probability of an event A = an adult likes soccer is aged between  18–30 will be the highest value among the ones mentioned in options.

Hence, the probability that an adult likes soccer is aged between  18–30 will be 44.4%.

To solve more questions on Probability, visit the link below -

brainly.com/question/24028840

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4 0
1 year ago
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