Answer:
The probability that she gets all 7 questions correct is 0.0078.
Step-by-step explanation:
We are given that Karri takes a 7 question true-false test and guess on every question.
The above situation can be represented through binomial distribution;
where, n = number of samples (trials) taken = 7 question
r = number of success = all 7 questions correct
p = probability of success which in our question is probability that
question is correct, i.e. p = 50%
Let X = <u><em>Number of question that are correct</em></u>
So, X ~ Binom(n = 7, p = 0.50)
Now, the probability that she gets all 7 questions correct is given by = P(X = 7)
P(X = 7) =
=
= <u>0.0078</u>
Answer:
Answer is 32
Step-by-step explanation:
Mode = no of stu +1/2
Mode =12+1/2
Mode =13/28=6.5
Mode =6th mark +7th mark /2
Mode=32+32/2
Mode=64/2
Mode=32
Hope it helps
Peace
Please mark me as brainliest
12 inches=1 foot
There are 72 or 12 x 6 inches in a foot which means 6 feet.
There are 2 inches remaining so there are 6 2/12 or 6 1/6 ft in 74 inches.
<span>4x+7x+19=3 x 12 - 4+(5 x 16) - 5 </span><span>
7x+3-2x=4x+2 x 5 + 1
</span>
Answer:6
Step-by-step explanation:2+4