Intr
On the midnight shift, the number of patients with head
trauma in an emergency room has the probability
distribution shown below.
17/8
10
points
X
P(x)
0 1 2
.01 .30 .25
3
.19
4 5
13.12
Total
1.00
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6.1
Pro
Dis
(a) Calculate the mean and standard deviation. (Round your
mean value to 2 decimal places and standard deviation to
3 decimal places.
References
Mean
Standard deviation
(b) Describe the shape of this distribution.

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

The table shows population statistics for the ages of best actor and best supporting actor winners at an awards ceremony. the distributions of the ages are approximately bell-shaped. compare the z-scores for the actors in the following situation. best actor best supporting actor muequals42.0 muequals49.0 sigmaequals7.3 sigmaequals15 in a particular year, the best actor was 59 years old and the best supporting actor was 45 years old. determine the z-scores for each. best actor: z equals best supporting actor: z equals (round to two decimal places as needed.) interpret the z-scores. the best actor was (more than 2 standard deviations above more than 1 standard deviation above less than 1 standard deviation above less than 2 standard deviations below) the mean, which (is not, is) unusual. the best supporting actor was (less than 1 standard deviation below more than 1 standard deviation above more than 2 standard deviations below more than 1 standard deviation below) the mean, which (is is not) unusual.

Me because i don't understand how to do it.: )