What is one common detail in the lives of the spanish musicians falla, ponce, and lecuona?

a. they wrote the same number of ballets
b. they each played professionally by age 5.
c. they each lived in spain for a period of time.
d. they each received their first musical training from a family member

Answer : D. They each received their first musical training from a family member.

Explanation : The mother of Manuel de Falla was a pianist and taught him as a child.

Ernesto Lecuona began studying piano with his sister as a child.

Manuel M. Ponce began studying piano with his sister as a child.



Confidence interval: (21.9, 32.9).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 26 - 1 = 25

98% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 25 degrees of freedom(y-axis) and a confidence level of . So we have T = 2.485

The margin of error is:

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 27.4 - 5.5 = 21.9 hours

The upper end of the interval is the sample mean added to M. So it is 27.4 + 5.5 = 32.9 hours

Confidence interval: (21.9, 32.9).