Seb made a jump of two and a half meters Kirsty's jump was 10 centimeters longer how long was Kirsty's jump
2 answers:
First of all, a meter is equal to 100cm.
Seb made a jump of two and a half meters. (
or 
)
Multiply 100 by 2.
Now we need the half.
What is half of 100?
50 is half of 100.
So, add 50 to the 200.
Kirsty's jump was 10 centimeters longer.
Add 10 centimeters to the 250 centimeters.
Kirsty's jump was 260 centimeters high, or 2.55 meters.
Seb made a jump of two and a half meters. (
Multiply 100 by 2.
Now we need the half.
What is half of 100?
50 is half of 100.
So, add 50 to the 200.
Kirsty's jump was 10 centimeters longer.
Add 10 centimeters to the 250 centimeters.
Kirsty's jump was 260 centimeters high, or 2.55 meters.
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Answer:
Assuming a standard significance level of the best conclusion for this case would be:
4. There is not enough evidence to show that more than 35% of community college students own a smart phone (P-value = 0.034).
Because
If we select a significance level lower than 0.034 then the conclusion would change.
Step-by-step explanation:
Data given
n=300 represent the random sample taken
X=120 represent the people who have a smart phone
estimated proportion of people who have a smart phone
is the value that we want to test
z would represent the statistic (variable of interest)
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:
Alternative hypothesis:
The statistic is given by:
(1)
Calculate the statistic
Since we have all the info requires we can replace in formula (1) like this:
Statistical decision
Since is a right tailed test the p value would be:
Assuming a standard significance level of the best conclusion for this case would be:
4. There is not enough evidence to show that more than 35% of community college students own a smart phone (P-value = 0.034).
Because
If we select a significance level lower than 0.034 then the conclusion would change.