Answer:
The mean of x is close to 14.8.
The standard deviation of x is close to 3.78.
Step-by-step explanation:
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and each trial can only have two outcomes, with probabilities 
and 
.
For an experiment with n repeated trials and a probability of success , we have that:
The mean is: 
The standard deviation is: 
In this problem
There are 400 employees, each with a probability of 3.7% of having food allergy. So 
. So:
The mean of x is close to 14.8.
The standard deviation of x is close to 3.78.
Answer:
solution :
in the given figure AB=10.2cm, AC=14cm, AD=DC and AD perpendicular to BC.
now ,
in rt angle tirangle ADC,
angleACD=45 degree, angle DAC=45 degree now,
in triangle ABD,
angle BAD+angleABD+angleADB=180 DEGREE (sum of the sngle of triangle)
angle BAD+75+30=180
angle BAD=180-165 therefore,angle BAD=15
angle BAC =15+45=60
Area of triangle ABC=1/2×AB×AC×SIN 60
=1/2×10.2×14×√3/2
=61.83cm³ ans
Answer:
See below
Step-by-step explanation:
Since you didn't give an actual quadratic equation and just the standard form equation, I will reduce ax^2+bx+c=0:
(ax+p)(x+q) where p+q=b and pq=c
Answer:
B)120º
Step-by-step explanation:
70+50=x
120=x
Answer:
The scale is 11 feet per one inch.
Step-by-step explanation:
