Determine whether the underlined value is a parameter or a statistic. a study of 6 ,076 adults in public rest rooms found that modifying 23 % did not wash their hands beforebefore exiting. exiting
a. the value is a parameter because the 6,076 adults in public rest rooms are a sample
b. the value is a parameter because the 6,076 adults in public rest rooms are a population. °
c. the value is a statistic because the 6076 adults in public restrooms are a sample
d. the value is a statistic because the 6,076 adults in public rest rooms are a population.

The correct answer is: C. The value is a statistic because the 6076 adults in public restrooms are a sample.

Step-by-step explanation:

A sample statistic is a piece of statistical information you get from a part of a population. In this case, 6076 adults in public restrooms.

Now you have recognized the sample, and you infer some measure from this sample. In this case, 23% did not wash their hands before exiting.

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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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