QUESTION TWO (a) A population consists of the five numbers: 32, 34, 36, 38, 40. Consider all possible samples of
size (2) which can be drawn with replacement from this population.
(b) Compute the mean and variance of the sampling distribution of means.
(c) Consider all possible samples of size (2) which can be drawn without replacement.
(d) Compute the mean and variance of the sampling distribution of means.

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

my dear correct answer is option number 3

1st integer x

2nd integer x+1

3rd integer x+2

4th integer x+3

x+x+1 +x+2+x+3 =74

combine like terms

4x+6 = 74

subtract 6 from each side

4x = 68

x = 17

the integers are 17,18,19,20