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boyakko [2]
3 years ago
13

The mean age of 5 people in a room is 32 years. A person enters the room. The mean age is now 34. What is the age of the person

who entered the room?
Mathematics
1 answer:
nikdorinn [45]3 years ago
8 0
The age of the person is 36 :) hoped this helped
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Answer:

p_v =P(z>1.82)=0.034  

Assuming a standard significance level of \alpha=0.05 the best conclusion for this case would be:

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Step-by-step explanation:

Data given

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z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

System of hypothesis

We need to conduct a hypothesis in order to test the claim that the true proportion of people who have a smart phone is higher than 0.35, the system of hypothesis are.:  

Null hypothesis:p\leq 0.35  

Alternative hypothesis:p > 0.35  

The statistic is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Calculate the statistic  

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.4 -0.35}{\sqrt{\frac{0.35(1-0.35)}{300}}}=1.82  

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Since is a right tailed test the p value would be:  

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Step-by-step explanation:

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