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MakcuM [25]
3 years ago
11

I just do not understand how to answer this questions (not a test brainly)

Mathematics
2 answers:
Rudik [331]3 years ago
7 0

Answer:

200

Step-by-step explanation:

80% bought a drink

30% bought a snack

30% is said to be 120 people

So 60% would be 240 (30%x2)

To find the remaining 20% we need to find out how much one part will be so:

120÷30 is 4

20x4=80

240+80= 320

320-120=200

correct me if I'm wrong

goblinko [34]3 years ago
6 0

Answer: その店はスナックよりも96杯多い飲み物を売った。

Step-by-step explanation:

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Coach Jericho recorded the number of shots made by the starters on the 6th grade and 8th grade boys’ basketball team during the
mrs_skeptik [129]

Answer:

D. The mean for the 8th grade players is 3 times the mean for the 6th grade players. & E. The data set distribution for the 8th grade players is symmetric.

3 0
3 years ago
GIVING BRAINLEZST ANSWERR FAST!!!
Alex Ar [27]

Answer:

B- $38.00

Step-by-step explanation:

Since there are two adults, you would multiply the cost of adults by number of adults. in this case that would be $10.75 x 2= $21.50. do the same for the kids and you will get $5.50 x 3 = $16.50. add 16.50 and 21.50 and you will get $38.00 which is your answer

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4 0
3 years ago
A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 420 gram setting. It is
anastassius [24]

Answer:

t=\frac{424-420}{\frac{26}{\sqrt{61}}}=1.202    

p_v =2*P(t_{(60)}>1.202)=0.234  

If we compare the p value and the significance level given \alpha=0.01 we see that p_v>\alpha so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can conclude that the true mean is NOT different from  420. So the specification is satisfied.

Step-by-step explanation:

Data given and notation  

\bar X=424 represent the sample mean

s=26 represent the sample standard deviation

n=61 sample size  

\mu_o =420 represent the value that we want to test

\alpha=0.01 represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the true mean is different from 420 or not, the system of hypothesis would be:  

Null hypothesis:\mu = 420  

Alternative hypothesis:\mu \neq 420  

If we analyze the size for the sample is > 30 but we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic

We can replace in formula (1) the info given like this:  

t=\frac{424-420}{\frac{26}{\sqrt{61}}}=1.202    

P-value

The first step is calculate the degrees of freedom, on this case:  

df=n-1=61-1=60  

Since is a two sided test the p value would be:  

p_v =2*P(t_{(60)}>1.202)=0.234  

Conclusion  

If we compare the p value and the significance level given \alpha=0.01 we see that p_v>\alpha so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can conclude that the true mean is NOT different from  420. So the specification is satisfied.

4 0
3 years ago
Email me in school ima bored Raul.Hoffman2d11.org<br> the 2 is the at wont let me
butalik [34]

Answer:

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Step-by-step explanation:

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Math help please and thanks
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Answer:

idek and i dont ;like how this is working!

Step-by-step explanation:

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