Answer:
$37.85
Step-by-step explanation:
the answer is 37 dollars and 85 cents
Answer:b
Step-by-step explanation:
Answer: $12
Step-by-step explanation: 840 divided by 70 is $12
Answer:
the 90% confidence interval is ( 48.684 , 51.316 )
Step-by-step explanation:
Given that :
the sample size = 36
Sample Mean = 50
standard deviation = 4.80
The objective is to calculate a 90% confidence interval.
At 90% confidence interval ;
the level of significance = 1 - 0.9 = 0.1
The critical value for
= 1.645
The standard error S.E =
=
= 0.8
The Confidence interval level can be computed as:
For the lower limit :
=50 - 1.316
= 48.684
For the upper limit :
=50 + 1.316
= 51.316
Thus, the 90% confidence interval is ( 48.684 , 51.316 )
2a^4-3b^3
2*-2^4-3*3^3
2*16-3*9
32-27
5
Hope this helps :)