The data value x exists in two data sets: a and b. the mean is equal for both data sets. if the standard deviation for set a is greater than the standard deviation for set b, which is true for zx for set a? it is equal to zx for set b. it is less than zx for set b. it is greater than zx for set b.

it is less than zx for set  b.

Step-by-step explanation:

The z-score of a data value is the number of standard deviations it is away from the mean.

The mean of both set a and set b is the same.

The standard deviation of set a is larger than that of set b.  This means that for any given data point in set a, it will be fewer standard deviations away from the mean than it would be in set b.  This makes the second choice true.

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

2. -4.5

3. 3.6

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