Answer: In the attachment, solved for 15 minutes. Hope that helps!!
Solving:
when you divide, you get this number: 1.56775
You have been asked to round to the tenth.
The tenth is one place right of the decimal. (currently a 5)
Look at the next place to the right. Since it is 6, we round up the tenth place by one. So our 5 in the tenth place becomes 6 (because the next digit was greater than 4)
1.6 is the final result
Answer:
The required confidence interval is (3.068,4.732)
Step-by-step explanation:
Consider the provided information.
He plans to use a 90% confidence interval. He surveys a random sample of 50 students. The sample mean is 3.90 alcoholic drinks per week. The sample standard deviation is 3.51 drinks and wants to construct 90% confidence interval.
Thus, n=50,
=3.90 σ=3.51
Now find degree of freedom.

The confidence level is 90% and df=49
Therefore,


Now by using t distribution table look at 49 df and alpha level on 0.05.

Calculate SE as shown:


Now multiply 1.67653 with 0.4964
Therefore, the marginal error is: 1.67653 × 0.4964≈ 0.832
Now add and subtract this value in given mean to find the confidence interval.

Hence, the required confidence interval is (3.068,4.732)
Answer:
No, the closest to -451 in the sequence is -429
Step-by-step explanation:
Answer:
4x2–12x+33=0
Resta 4x
2
en los dos lados. Cualquier valor restado de cero da como resultado su valor negativo.
−12x+33=−4x
2
Resta 33 en los dos lados.
−12x=−4x
2
−33
Divide los dos lados por −12.
−12
−12x
=
−12
−4x
2
−33
Al dividir por −12, se deshace la multiplicación por −12.
x=
−12
−4x
2
−33
Divide −4x
2
−33 por −12.
x=
3
x
2
+
4
11
Resolver para x_2
x
2
=3x−
4
33
Step-by-step explanation: