A research team wants to investigate the usefulness of relaxation training for reducing levels of anxiety in individuals experiencing stress. They identify 30 people at random from a group of 100 who have "high stress" jobs. The 30 people are divided into two groups. One group acts as the control group - they receive no training. The second group of 15 receive the relaxation training. The subjects in each group are then given an anxiety inventory. The summarized results appear below where higher scores indicate greater anxiety. Use a significance level of alpha = 0.025
Answer:
poop
Explanation:
poop
With the use/abuse of alcohol, the heart is more efficient in the use of nutrients by the heart tissue.
true or false
On the midnight shift, the number of patients with head trauma in an emergency room has the probability distribution shown below. х P(x) 0 .09 1 .32 2 3 .27 .17 4 .11 5 .04 Total 1.00 (a) Calculate the mean and standard deviation. (Round your mean value to 2 decimal places and standard deviation to 3 decimal places.) Mean Standard deviation LI
Answer:
2.01 ; 1.918
Explanation:
Given the data:
X : ____ 0 __ 1 ___ 2 ___ 3 ____ 4 ____ 5
P(x) : 0.09 _ 0.32 _0.27_0.17___0.11 __ 0.04
The mean, E(x) :
Σ(X * p(x))
= (0*0.09)+(1*0.32)+(2*0.27)+(3*0.17)+(4*0.11)+(5*0.04) = 2.01
Standard deviation = sqrt(variance)
Variance = Var(x)
Var(X) = Σx²*p(x) - E(x)
Σ[(0^2 * 0.09) + (1^2 * 0.32) + (2^2 * 0.27) + (3^2 * 0.17) + (4^2 * 0.11) + (5^2 * 0.04)] - 2.01
= 5.69 - 2.01
= 3.68
SD(x) =sqrt(3.68)
SD(x) = 1.918
When life gives you lemons, squirt someone in the eye.
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Answer:
lol
Explanation:
why communication is the life blood of all organizations
Answer
Effective communication is the life blood of every organization and a key to success in our business career and our personal life. Effective communication is vital inside the company because employees can be better motivated and more efficient by it. ... Success of the business depends on effective communication.
Explanation:
In how many ways can 10 athletes be awarded a first-place medal, a second-place medal, and a third-place medal?
answer is
10P3 = 10 x 9 x 8 = 720.
Cali wants to work on improving her money management skills. To start, she needs to gather financial records. What type of financial record would MOST help her begin this process?
A.
the title to her car
B.
the bank’s latest interest rates
C.
her driver’s license
D.
her yearly tax forms
The type of financial record would most help her begin this process is her yearly tax forms. The correct option is D.
What are money management skills?Money management skills are those skills that help to spend money wisely and carefully.
There are three fundamental steps you can follow to make the most of your money, whether you're planning for your entire family or just yourself: Make a budget first. 2: Make savings objectives.
And last, pay off your debts. Overspending is a simple consequence of poor financial management. It's crucial to plan ahead for sizable bills.
Saving money for your next major buy before using your credit cards is far more satisfying. If you are careless, it may result in more debt that rapidly spirals out of hand.
Therefore, the correct option is D. her yearly tax forms.
To learn more about money management skills, refer to the link:
https://brainly.com/question/16126822
#SPJ2
Average heart rate for Americans is 72 beats/minute. A group of 25 individuals participated in an aerobics fitness program to lower their heart rate. After six months the group was evaluated to identify is the program had significantly slowed their heart. The mean heart rate for the group was 69 beats/minute with a standard deviation of 6.5. Was the aerobics program effective in lowering heart rate? Use a significance level of alpha = 0.01
Answer:
tgdgujki
Explanation:
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