Given: The systolic arterial blood pressure observed for 20 dogs is normally distributed with a mean of 152 mm of mercury (Hg) and a standard deviation of 18 mm of Hg.
To find: P(100 < 152)
Method: Calculation of Z-Score followed by the probability or area of the bell curve at X = 100.
Solution:
Mean u = 152, std s = 18
Z score = 
The value of P(100<152) is calculated by looking at the value of Z in the Z score for the standard normal distribution given in the image.
P(Z=-2.89) = 0.0019
The P(Z = -2.89) corresponds to the area in the left tail of the bell curve.
Thus the probability of 100 mm Hg blood pressure is 0.0019.
X-linked disorder is a recessive autosomal disorder, which means that
There is a 1 in 4 chance (25%) of having a child who is unaffected.
There is a 1 in 4 chance (25%) of having a child who is affected by the condition. These children have two copies of the gene that do not work correctly.
There is a 1 in 2 chance (50%) of having a child who is a carrier of the condition. These children have one working copy of the gene and one copy of the gene that does not work correctly.
it involved in the transfer of genetic material from one cell to another.
<span>Duchenne Muscular Dystrophy (DMD) leads to progressively worsening physical disability. Death often occurs by age 25, typically from lung disorders. However, advances in supportive care have resulted in many men living much longer than this.Specific common causes of death include:
Cardiomyopathy (can also occur in female carriers, who should also be screened)
Congestive heart failure (rare)
Deformities
Heart arrhythmias (rare)
Mental impairment (varies, usually minimal)
Permanent, progressive disability, including decreased mobility and decreased ability to care for self
Pneumonia or other respiratory infections
Respiratory failure</span>
