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Height of men have a mean of 69.6 inches and standard Dev of 2.8 inches. If 64 men are randomly seleted , find the probabilty that they have a mean greater than 70.6 inches.
Hypothesis test of difference between two means based on independent random samples, which one of the given is correct rejection region at significance level of .05?
Number of miles flown in a One- year period by the sample of "frequent flyers" was recorded. Is this a grouped or an ungrouped frequency distribution?
What if the number of debilitating network viruses detected in a day at the firewalls of an Internet service provider within a certain geographic region is fueling a possible management decision to upgrade the detection system.
Using the finite population correction factor, compute the standard error for each of the three firms given a sample of size 50.
From the given probability distribution finite the mean and standard deviation.
Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
Create a real-world situation or problem that could be addressed using an independent- or related-samples t test. Create this situation or problem, that clearly identify the independent and dependent variables to study
A sample of n=20 has a mean of M = 40. If the standard deviation is s=5, would a score of X= 55 be considered an extreme value? Why or why not?
A certain model of remote-control Stanley garage door opener has nine binary (off/on) switches. The homeowner can set any code sequence.
You just saw an ad on television that states the majority of the population would vote to make smoking illegal. The poll that is referenced shows 53% of those asked supported making smoking illegal.
11% needed to be serviced once, 5% twice, 4% three times, and none required more than three repairs. what are the expected no of repairs per year.
The average number of hours of sleep per night that a college freshman gets is 6.50 with a standard deviation of 1.80 hours. If 35 college freshmen are randomly chosen find the probability that they average at least seven hours of sleep per night.
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