Answer:
0.7
Step-by-step explanation:
5(9n-6)
5×9n-5×6
45n-30
45n/45 -30/45
or 45n÷45-30÷45
n= 0.6666
0.7
hope dis helps!!!!!
Answer:
25
Step-by-step explanation:
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