Consider a value to be significantly low if its z score less
than or equal to −2 or consider a value to be significantly high if
its z score is greater than or equal to 2.
A data set lists weights (grams) of a type of coin. Those
weights have a mean of 5.13125 g and a standard deviation of
0.05783 g. Identify the weights that are significantly low or
significantly high.
Consider a value to be significantly low if its z score less
than or equal to minus−2 or consider a value to be significantly
high if its z score is greater than or equal to 2.
A test is used to assess readiness for college. In a recent
year, the mean test score was 20.8 an the standard deviation was
5.3. Identify the test scores that are significantly low or
significantly high.
What test scores are significantly low? Select the...
What is the probability that Z is less than minus − 0.27 0.27 or
greater than the mean? The probability that Z is less than minus −
0.27 0.27 or greater than the mean is 0.8936
Using the Standard Normal Table. What is the probability a
z-score is between -1.82 and -0.68?
In other words, what is P( -1.82 < z < -0.68)?
A.
0.2827
B.
0.0422
C.
0.2139
D.
0.1114
Using the Standard Normal Table. What is the probability a
z-score is between -1.11 and 0.91?
In other words, what is P( -1.11 < z < 0.91)?
A.
0.0479
B.
0.5186
C.
0.9521
D.
0.6851