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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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Aleks [24]

Answer:

n x p = c

Step-by-step explanation:

n is the amount of pens so we time it by the cost of 1 pen which is p and the final answer is c as the cost of all the pen.

6 0
2 years ago
Find the length of the other two side of the isosceles right triangle
Valentin [98]

Answer:

The other two sides are 7 units each.

Step-by-step explanation:

The triangle is isosceles.

The sides are in the ratio of

x : x : x \sqrt{2}

The hypotenuse is

7\sqrt{2}=x \sqrt{2}\\\\x = 7

So, the other two sides are 7 units each.

4 0
3 years ago
Brainlist. Neeed this ASAP. please its on Simplify Expression and i put the picture below
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Answer:

G

Step-by-step explanation:

the perimeter is the sum of all sides so we have

P=a^{2} -ab+a-2a+a^2+ab\\\\P=(a^2-2a^2+a^2)+(-ab+2b)+a\\\\P=(0a^2)+(ab)+a\\\\P=ab+a

8 0
2 years ago
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Is 0.018 a reasonable answer for 1.8×100
LenKa [72]
No, it would be 180.0 , since you are multiplying the small amount by a large amount that is not negative.
7 0
3 years ago
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URGENT! FAST REPLY PLS!
Sergeeva-Olga [200]

Answer:

Step-by-step example explanation:

DOMAIN:

{

x

∣

x

≠

3

2

}

RANGE:

{

y

∣

y

≠

3

2

}

Explanation:

The domain consists of all numbers you can legally plug into the original. The excluded "illegal" values would be dividing by zero or negatives under square roots.

This expression has a denominator, so there is a risk of illegally dividing by zero. This would happen only if

2

x

−

3

=

0

2

x

=

3

x

=

3

2

This means that

x

=

3

/

2

is excluded from the domain. Therefore,

Domain: All real numbers except

x

=

3

/

2

. More formally, you could state the domain as

{

x

∣

x

≠

3

2

}

.

For rational functions, you find the range by evaluating the degree of the numerator compared to the degree of the denominator. If the degree of the top > degree of bottoms, then you have a horizontal asymptote at

y

=

0

. If they are equal, you have a horizontal asymptote. The coefficient of highest degree in the numerator is divided by the coefficient of the highest degree on the bottom. The result is

y

=

that fraction. So in our case, you have a horizontal asymptote at

y

=

3

2

7 0
3 years ago
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