Hi!
10.
This question is basically asking you, 10 is 40% of what number?
10 × 100 / 40 = 25
Fred must do 25 math problems.
12.
Bed & Bath = 40%
Clothing = 0.625 = 62.5%
Appliances = 20%
Electronics = 0.25 = 25%
Least to Greatest: Appliances (20%), Electronics (25%), Bed & Bath (40%), Clothing (62.5%).
Answer:
P(X=0)=0.000008
P(X=1)=0.00176
P(X=2)=0.057624
P(X=3)=0.941192
Step-by-step explanation:
Probability of correct classification = p = 0.98
Probability of incorrect classification = q = 1 - p = 0.02
The probability of success and failure is the same for all the trials. The trials are independent of each other and the number of trials is fixed i.e. n = 3.
This satisfies all the conditions of a Binomial Experiment. So we can use Binomial experiment to model the probability mass function.
The general formula of a binomial probability is:

Here x denote the number of successes, which can be {0, 1, 2, 3}. So we need to evaluate the above equation for each value of x to determine the probability Mass function of X, as shown below:

Answer:
21=3/7
Step-by-step explanation:
if you divide 21 by 7, you get 3. if you multiply 7x3 or 3x7, you get 21