Aquestionnaire to assess knowledge of communicable diseases was administered. there were a total of 36 questions to which respondents could answer "agree", "disagree", or "don’t know". scores could range from 0 to 36. the mean score for u. s. study participants was 20.6 with a standard deviation of 5.8, while the mean score for mexican study participants was 17.4 with a standard deviation of 5.8. the number of u. s. and mexican study participants was 185 and 86, respectively. supply the 90 percent confidence interval for the difference between the two population means.

Confidence interval: (1.95,4.45)

Step-by-step explanation:

We are given the following information:

U.S Scores

Mexico Scores

Formula:

Degree of freedom =

Confidence interval:

Putting the values, we get,

109 trust me

step-by-step explanation:

(2x + 16) + (x) = 180

step-by-step explanation:

given,

abcd is a quadrilateral inscribed in a circle

angle a is labeled x plus 16, (x + 16)

angle b is labeled x degrees, (x)

angle c is labeled 6x minus 4, (6x – 4)

angle d is labeled 2x plus 16, (2x + 16)

what equation can be used to solve for angle b?

we know that the sum of the opposite angles of a simple quadrilateral inscribed in a circle is 180 degrees.

angle b is opposite angle d

therefore, angle b + angle d = 180

(x) + (2x + 16) = 180 

same as (2x + 16) + (x) = 180