Каковы ключевые элементы, необходимые для построения диаграммы рассеяния?

18. Aşağıda verilen örnek büyüklüklerinden hangisi için standart normal dağıı (z ww tablosu) kullanılır? A) 35 B) 26 C) 25 D) 21 E) 18

If \( n(A)=8 \) and \( n(A \cap B)=2 \), then \( n\left[(A \cap B)^{\prime} \cap A\right] \) is equal to \( \begin{array}{ll}\text { (a) } 2 & \text { (b) } 4 \\ \text { (c) } 6 & \text { (d) } 8 \\ \text { (e) } 10 & \end{array} \)

A) mathematics test was given to 50 girls and 75 boys. The girls (8) made an average of 76 with an standard deviation of 6 and the boys made an average of 82 with an standard deviation of 2 . Determine whether there is any difference between the performance of boys and girls. Out of a sample of 1000 persons, 800 persons were found to be (7) coffee drinkers. Subsequently, the excise duty on coffee was increased Affer the increase in excise duty of coffee seeds, 800 people were found to take coffee out of a sample 1200 Determine whether there is any significant decrease in the cansumption of coffee after the increase in excise duty

20. Aşağıdakilerden hangisi bir popülasyondan yerine tekrar koymak suretiyle yeterince büyük ve bağımsız rastgele örneklerin alınması durumunda, örnek ortalamalarının dağılımııı yaklaşık olarak normal dağılacağını ifade eder? A) Normal dağıım B) Pisagor teoremi C) Merkezî limit teoremi D) Güven aralığı E) Büyük sayılar kanunun

here are 100 students in a class. In an examination, 50 of them ailed in Mathematics, 45 failed in Physics, 40 failed in Biology nd 32 failed in exactly two of three subjects. Only one studen assed in all the subjects. Then the number of students failing all the three subjects a) Is 12 a) Is 4 t) Is 2 d) Cannot be determined from the given information