A treatment is controlled to an example of n = 9 people chose from a populace with a mean of = 80 and a standard deviation of = 12. After treatment, the impact size is estimated by registering Cohen's d, and an estimation of d = 0.50 is acquired. In view of this data, what is the mean for the treated example?

a.

Cannot answer without realizing the example size

b.

M = 82

c.

M = 86

d.

M = 6

Have American guys (AMs) gotten heavier in the course of the most recent 20 years? An irregular example 77 AMs in 2019 had a mean load of x = 189.030 pounds. An arbitrary example 93 AMs in 1999 had a mean load of y = 184.795 pounds. It is perceived that the genuine standard deviation of 2019 AMs loads is

x

= 14.04 pounds while it is perceived that the genuine standard deviation of 1999 AMs loads is

y

= 10.03 pounds. The valid (obscure) mean of 2019 AMs loads is

x

pounds, while the valid (obscure) mean of 1999 AMs loads is

y

pounds. Loads are known to be a typically disseminated. In synopsis:

Type Sample Size Sample Mean Standard Deviation

2019 Data (X) 77 189.030 14.04

1999 Data (Y) 93 184.795 10.03

\5\

I) If we utilized this information to test H0:x-y=0 against the other option

Ha:x-y>0 then what might the p esteem have been?

j)If we utilized this information to test H0:x-y=0 against the other option

Ha:x-y0 then what might the p esteem have been?

A populace has a change of 867. We take an arbitrary example of size 47 from this populace. Leave Xbar alone the example mean and let Xtot be the example amount of our example. These are arbitrary factors.

d) What is the standard deviation of Xtot? (to three decimal spots)

e) What is the littlest example size, n, which will make the standard deviation of Xtot in any event 324?

f) What is the littlest size test, n, which will make the difference of Xtot at any rate 93100?

A populace has a difference of 867. We take an irregular example of size 47 from this populace. Leave Xbar alone the example mean and let Xtot be the example amount of our example. These are arbitrary factors.

a) What is the standard deviation of this populace?

b) What is the fluctuation of Xbar? (to three decimal spots)

c) What is the standard deviation of Xbar? (to three decimal spots)