Answer:
0.41
Step-by-step explanation:
8/10 = 0.80
1 5/6 = 1.833333
0.80 ÷ 1.833333333 = 0.436363636
Turn it back into a fraction:
Your answer is 24/55
Hope I Helped!!!
Answer:
The approximate 90% confidence interval is;
70,244 to 70,732
Step-by-step explanation:
Here, we want to calculate the approximate 90% C.I for the situation
Mathematically;
CI = mean ± (z * SD)/√n
From the question;
mean = 70,438
SD = 645.3
n = 30
we can get z from the CI table
90% CI is same as; 1.645 z-score
So , substituting these values;
CI = 70,438 ± ( 1.645 * 645.3)/√30
CI = 70,438 ± 194
So the CI = 70,438 -194 to 70,438 + 194
= 70,244 to 70,732
Solution :
1st -
2nd -
3rd -
4th -
Conclusion - only third choice has negative equivalent value