Examlex
The SAT scores have an average of 1200 with a standard deviation of 60. A sample of 36 scores is selected.
a.What is the probability that the sample mean will be larger than 1224?
b.What is the probability that the sample mean will be less than 1230?
c.What is the probability that the sample mean will be between 1200 and 1214?
d.What is the probability that the sample mean will be greater than 1200?
e.What is the probability that the sample mean will be larger than 73.46?
Q25: Babies weighing less than 5.5 pounds at
Q26: The average weekly earnings of bus
Q27: A manufacturing company has 5 identical machines
Q49: In a standard normal distribution,the range of
Q53: Twenty-five percent of all resumes received by
Q64: A sample of 41 observations yielded
Q98: Refer to Exhibit 5-8.The probability that there
Q104: For a uniform probability density function,<br>A)the height
Q116: A simple random sample from an infinite
Q159: The monthly earnings of computer systems analysts