Answer: option B
Step-by-step explanation:
Miguel has to take two quizzes
1) 4 true or false questions on History with a 0.5 chance of acing the quiz
Expected number of correct questions = np
n = number of questions
p = probability of acing the test
Expected number of correct questions = 4 × 0.5 = 2
2) 3 multiple choice questions on Science with a 0.2 chance of acing the quiz.
Expected number of correct questions = 0.2 × 3 = 0.6
It is evident that guessing would yield a worse result in the Science quiz with less than 1 question expected to be correct than history, where he is still expected to get 2 questions correctly by guessing.
Answer:
300
Step-by-step explanation:
120 ÷ 2/5 = 300
1: 2x-8 2: 6n-3 3:5y-10 4:
Answer: the slope is 3 and the intercept is 0.
Step-by-step explanation:The trend line for the bivariate data shown in the scatter plot has the equation Y=3x
To determine the slope for a straight line (y=a*x+b)we take the two points that are shown and apply the following equation:
To determine the intercept we put the slope which we calculated into the equation for the point (2,6) and clear for b
Answer:
0.84
Step-by-step explanation:
4x2+13a+10=7
13a=7-10-8
13a=-11
a=-11:13
a=0.84
