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ollegr [7]
3 years ago
14

Meauring the speed of a car at 60 mph would be an example of quantitative data. True False

Mathematics
2 answers:
masha68 [24]3 years ago
6 0
Measuring the speed of a car at 60 mph would be an example of quantitative data
Answer: true
Kobotan [32]3 years ago
5 0

Answer:

True

Step-by-step explanation:

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A is directly proportional to B when A=12 B=3 Find the value of A when B = 5​
Schach [20]

Answer:

A = 20

Step-by-step explanation:

12/3 = A/5

60 = 3A

A = 60÷3 = 20

3 0
3 years ago
Find the length of the third side. If necessary, round to the nearest tenth.
NikAS [45]

Use the Pythagorean theorem

Side = sqrt(8^2 - 6^2)

Side = sqrt(64-36)

Side = sqrt(28)

Side = 5.29

Rounded to nearest tenth = 5.3

7 0
3 years ago
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How do you do this? I'm so confused
zepelin [54]
There are lots of videos on YouTube on how to do it I’m not completely sure so I don’t want to tell you something false
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3 years ago
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In the past decades there have been intensive antismoking campaigns sponsored by both federal and private agencies. In one study
DIA [1.3K]

Answer:

z=\frac{0.384-0.362}{\sqrt{0.374(1-0.374)(\frac{1}{4276}+\frac{1}{3908})}}=2.055    

The p value can be calculated from the alternative hypothesis with this probability:

p_v =2*P(Z>2.055)=0.0399    

And the best option for this case would be:

C. between 0.01 and 0.05.

Step-by-step explanation:

Information provided

X_{1}=1642 represent the number of smokers from the sample in 1995

X_{2}=1415 represent the number of smokers from the sample in 2010

n_{1}=4276 sample from 1995

n_{2}=3908 sample from 2010  

p_{1}=\frac{1642}{4276}=0.384 represent the proportion of smokers from the sample in 1995

p_{2}=\frac{1415}{3908}=0.362 represent the proportion of smokers from the sample in 2010

\hat p represent the pooled estimate of p

z would represent the statistic    

p_v represent the value for the pvalue

System of hypothesis

We want to test the equality of the proportion of smokers and the system of hypothesis are:    

Null hypothesis:p_{1} = p_{2}    

Alternative hypothesis:p_{1} \neq p_{2}    

The statistic is given by:

z=\frac{p_{1}-p_{2}}{\sqrt{\hat p (1-\hat p)(\frac{1}{n_{1}}+\frac{1}{n_{2}})}}   (1)  

Where \hat p=\frac{X_{1}+X_{2}}{n_{1}+n_{2}}=\frac{1642+1415}{4276+3908}=0.374  

Replacing the info given we got:

z=\frac{0.384-0.362}{\sqrt{0.374(1-0.374)(\frac{1}{4276}+\frac{1}{3908})}}=2.055    

The p value can be calculated from the alternative hypothesis with this probability:

p_v =2*P(Z>2.055)=0.0399    

And the best option for this case would be:

C. between 0.01 and 0.05.

7 0
3 years ago
if an exterior angle of a regular polygon measures 15 degrees how many sides does it have ?a.23. b.24. c.25
dimaraw [331]

Answer:

B.24

Step-by-step explanation:

we know,

exterior angle  = 360°/n(where 'n' is number of sides)

then,

15° = 360°/n

n = 360°/15°

n = 24



3 0
3 years ago
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