Suppose that there are 5 children in a gymnastics class. One day, they count the number steps each person takes while walking on their hands until they lose their balance and come down. The results are: Chloe (20), Michael (8), Helen (22), Joshua (26), and Laura (24).
The mean number of steps these children took while walking on their hands is 20 steps.
(a) Identify the population and the parameter.
(b) List all 10 possible SRSs of size n=2. Calculate the mean number of steps taken while walking on their hands for each sample.
(c) Display the sampling distribution of the sample mean on a dotplot.

the reporter's right

step-by-step explanation:

1/4 = .25 / 25%

1696 hundred thousand

step-by-step explanation:

a is the right answer

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560