Anxiously-attached individuals in the general population tend to have low levels of satisfaction in their romantic relationships (μ = 10, σ = 5, positively skewed distribution). A therapist interested in increasing relationship satisfaction provides a week-long relaxation seminar to 11 anxious individuals. After completing the seminar, relationship satisfaction in the sample averages 12. What is the shape of the comparison distribution?

8.34% ( parabolic shape )

Explanation:

mean value ( μ ) = 10

std ( σ ) = 5

n = 11

simple average = 12

positively skewed distribution

Determine the shape of the comparison distribution

Note : The shape of the comparison distribution is dependent on the percentage of the scores that will fall above the Z-score since it is a positively skewed distribution

lets calculate the Z-score

Z = ( simple average - mean value ) / ( std / √ n )

  = ( 12 - 10 ) / ( 5 √ 11 )

  = 1.32

Next determine the percentage above Z -score

i.e. p(z>1.32) = 8.34% ( form z table )

attached below is the shape

think about the oscillation of the toy shown in the video. when the toy is at the highest point of its motion, its velocity is zero and its acceleration is negative.

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s