Social Studies, 23.03.2020 21:29 nabulya28

Dr. Chung, a renowned nutritionist, has consistently proclaimed the benefits of a balanced breakfast. To substantiate her claim, she asks her participants to go without breakfast for one week. The following week he asks the same participants to make sure they eat a complete breakfast. Following each week, Dr. Chung asks the supervisors of each participant to rate their productivity for that week.

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Answer from: kid1431

Explanation:

Dr. Chung, a renowned nutritionist, has consistently proclaimed the benefits of a balanced breakfast. To substantiate her claim, she asks her participants to go without breakfast for one week. The following week he asks the same participants to make sure they eat a complete breakfast. Following each week, Dr. Chung asks the supervisors of each participant to rate their productivity for that week.

Participant Performance with Breakfast(X) Performance Without Breakfast

(Y)

#1 8 6

#2 6 6

#3 8 5

#4 8 5

Using α = .05, do a one-tailed test of the doctor's hypothesis.

What is your T=

Performance with breakfast

mean, X = (8+6+8+8)/4 = 7.5

using the formular, $S = \sqrt{\frac{sum(xi-X)^{2} }{N-1} }$

standard deviation, S =√[ [(8-7.5)² + (6-7.5)² + (8-7.5)² + (8-7.5)²]/(4-1)]

S = 1

Number of sample, N = 4

Performance without breakfast

mean, x = (6+5+6+5)/4 = 5.5

Using the formula as above, standard deviation

$s = \sqrt{\frac{sum(xi-x)^{2} }{n-1} }$

s =√[ [(6-5.5)² + (6-5.5)² + (5-5.5)² + (5-5.5)²]/4-1]

s = 0.58

n = 4

T is given as follows

$T = \frac{X- x}{\sqrt({\frac{S^{2} }{N} }+\frac{s^{2} }{n} )}$

T = [(X - x)/[(S²/N) + (s²/n)]]

T = [(7.5 - 5.5)/[(1²/4) + (0.58²/4)]]

T = 3.46

Answer from: Quest

i think there are more hurricanes in the summer because it is warmer and the weather causes the water to become heavier and the weather is denser or more humid. the spring would be better to visit the caribbean.

Answer from: Quest

51% were unhappy, i think . ; )

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