Answer:
0.0512
Step-by-step explanation:
We are told in the question that X isa Binomial variable. Hence we solve this question, using the formula for Binomial probability.
The formula for Binomial Probability = P(x) = (n!/(n - x) x!) × p^x × q ^n - x
In the above question,
x = 3
n = 5
p = probability for success = 0.2
q = probability for failures = 1 - 0.2 = 0.8
P(x) = (n!/(n - x) x!) × p^x × q ^n - x
P(3) = (5!/(5 - 3) 3!) × 0.2^3 × 0.8^5-3
P(3) =( 5!/2! × 3!) × 0.2³ × 0.8²
P(3) = 10 × 0.008 × 0.64
P(3) = 0.0512
Thr probability is calculated from the data gathered from tests on a large number of people. There's undoubtedly some data included with this question that you neglected to copy. Without it, it's not possible to come up with an answer.
Answer:
40.0
18%
14.375%
1/250
38
6325
Step-by-step explanation:
Convert the percent to a decimal 4,000%
4000% = 4000/100 = 40.0
Convert the decimal or whole number to a percent.
0.36 * 1/2
= 0.36/2 * 100
= 0.18 * 100
= 18%
Convert the decimal or whole number to a percent.
1.15 * 1/8
= 1.15/8 * 100
= 14.375%
Convert the percent to a reduced fraction, mixed number, or whole number.
0.4%
= 0.4/100
= 1/250
Solve for the portion (in $). Round to hundredths when necessary.
9 1/2% of $400 = 19/2% x 400
= 0.095 x 400
= 38
Solve for the portion. Round to hundredths when necessary.
What number is 253% of 2,500?
253/100 x 2500
= 2.53 x 2500
= 6325
!!
Answer: 
Step-by-step explanation:
The confidence interval for population mean is given by :-
Given : Sample size : 
, which is a large sample , so we apply z-test .
Sample mean : 
Standard deviation : 
Significance level : 
Critical value : 
Now, a confidence interval at the 95% level of confidence will be :-
Answer:
y=12
Step-by-step explanation:
Lets write out the equation so it easy to work with.
7y=84
Divide both sides by 7
7y/7=84/7
Divide
y=12
