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
9. For a standard normal distribution, what is the probability
that Z is greater than -1.35? Round to four decimals and use
leading zeros.
10. For a standard normal variable, what is the probability that
Z is between -2.00 and -1.00? Round to four decimals and use
leading zeros.
11. For a dataset that follows the standard normal distribution,
what is the probability that Z is between 2.00 and 3.00? Round to
four decimals and use leading zeros.
Hint: For z-scores with a magnitude greater than 3.8, we know
from the z-table that the probability of a random case or sample
mean being further from the population mean is less than .0001.
This is true if z is 3.9, -4, or 24. Basically, if a case is that
much of an outlier, it’s really unlikely
1. In Wisconsin in 2014, there was a mean of 1128.8
injury-related emergency room visits per day (population mean),
with a standard deviation...
Consider the
probability that greater than 8888 out of 151151 people have not
been in a car accident. Assume the probability that a given person
has not been in a car accident is 57%57%.
Approximate the
probability using the normal distribution. Round your answer to
four decimal places.
Consider the probability that greater than 99 out of 157 people
have not been in a car accident. Assume the probability that a
given person has not been in a car accident is 55%.
Approximate the probability using the normal distribution. Round
your answer to four decimal places.
Find the probability of test score greater than 0.82, with a
mean of 0 and standard deviation of 1
greater than 1.82
between 0.25 and 1.25
between -2,75 and -2.00