Answer: 0
Step-by-step explanation:
Answer:
250
Step-by-step explanation:
150/3=50
50*2=100
150+100=250
98 98/100 because you move the decimal point over 2 times
Answer:
1000
Step-by-step explanation:
40x50=2000
2000/2=1000
Answer:
And we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613
Step-by-step explanation:
The estimated proportion of interest is 
We need to find a critical value for the confidence interval using the normla standard distributon. For this case we have 95% of confidence, then the significance level would be given by
and
. And the critical value is:
The confidence interval for the true population proportion is interest is given by this formula:
Replacing the values provided we got:
And we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613