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If the actual average game time (μ), for the 190 games, was 3.2 hours and the standard deviation (sigma) was one hour (1.0); calculate the probability that a randomly chosen sample of 17 games would have a sample mean less than the one you calculated in this exam. Use the standard normal distribution (z), draw the distribution, and show your work.
3 section of a statistics class containing 28,32 and 35 students averaged 83,80 and 76 respectively on same final exam. what 's the combined population means of all the 3 sect
You get X = 240 based on a sample n = 25 components, and you want the probability of a Type I error to be .01. State the null hypothesis and perform the appropriate test ass
Suppose that during the ith day of December, the energy Xi stored by a solar collector is well modeled by a Gaussian random variable with expected value 32 - i/4 kW-hr and s
A coin that comes up heads with probability p is ?ipped n consecutive times. What is the probability that starting with the ?rst ?ip there are always more heads than tails t
If there is an outage, there is a .05 probability that the resulting losses will be very large, approximately $ 80 million in lost earnings. Also, it is estimated that there
Let z represent the standard normal variable and suppose a value is randomly selected. Find each of the following probabilities by:
Find out whether or not right-hemisphere damage results in significantly reduced performance on spatial skills task. Test with alpha set at .05 with one tail.
The standard deviation of a normal distribution is 12 and 95% of the values are greater than 6. What is the value of the mean? The mean of a normal distribution is 132, and on
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