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A normal population has a mean of 60 and a standard deviation of 3. You select a sample of 36. Compute the probability the sample mean is (Round z values to 2 decimal places and final answers to 4 decimal places):
a) Less than 59.
b) Between 59 and 61.
c) Between 61 and 62.
d) Greater than 62.
Find the value of Z-score- standard normal distribution.Find out a value of the standard normal random variable z, call it z0.
At the .01 level of significance, is the true mean greater than 10?
Construction of histogram and pie chart for continuous data
If an urn is selected at random and a ball is drawn, find the probability it will be red.
Expand and aggregate plan using each of the following guidelines and complete the total cost for each plan. Which plan has the lowest total cost.
Set up hypotheses and carry out all relevant tests. Describe all results and implications which you have discovered.
How large should n be so that a 90% confidence interval for µ has a margin of error and What is the P-value for a test of the hypotheses
Following sample data shows the weekly closing price of ABC stock. Compute the sample mean and variance from this data set.
Using α = .05 test for significance differences among the population mean wasted time for theses three urban areas. What is the p-value? What is your conclusion?
Each of four tasters picks one coffee anyway (not knowing which is which, because the coffee is in identical cups). What is the probability that a) All four tasters choose Tasty Bean?
Decision making under risk is the same as decision making under uncertainty because in both the probabilities are unknown.
Can we conclude that the mean time for a game is less than 3.50 hours? Use the .05 significance level.
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