A sample of 20 cigarettes of bran a has an average nicotine constant of 1.68 mg what's the standard deviation of 0.22 mg; 25 cigarettes a brand B has an average of 1.95 mg of nicotine with a standard deviation of 0.24 mg. Construct the 95% confidence interval for the difference between the two population means.

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.

fd

step-by-step explanation:

from the sentence, "tomorrow morning, akiko will arrive an hour late" depicts a third person perspective because it doesn't use any pronoun to replace akiko, the subject of the sentence, and it is in singular form since akiko is only one person.

the answer would be a 24

step-by-step explanation:

c=2πr=2·π·3=24