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Elis [28]
2 years ago
5

Find the probability and its complement.

Mathematics
1 answer:
Sonbull [250]2 years ago
6 0
Answer: Boy- 46 %. not boy- 54%
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A local pizza store knows the mean amount of time it takes them to deliver an order is 45 minutes after the order is placed. The
Bad White [126]

Answer:

We need to conduct a hypothesis in order to check if the true mean is different from 45(alternative hypothesis), and then the system of hypothesis would be:  

Null hypothesis:\mu =45  

Alternative hypothesis:\mu \neq 45  

Since we don't know the sample size we can't calculate the statistic and the only thing that we can do is create the sytem of hypothesis.

Step-by-step explanation:

Data given and notation  

\bar X=48 represent the sample mean    

s=10 represent the sample standard deviation

n sample size  

\mu_o =45 represent the value that we want to test  

\alpha=0.05 represent the significance level for the hypothesis test.  

z would represent the statistic (variable of interest)  

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

System of hypothesis

We need to conduct a hypothesis in order to check if the true mean is different from 45(alternative hypothesis), and then the system of hypothesis would be:  

Null hypothesis:\mu =45  

Alternative hypothesis:\mu \neq 45  

Since we don't know the sample size we can't calculate the statistic and the only thing that we can do is create the sytem of hypothesis.

5 0
3 years ago
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