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How would I find the level of confidence that whiteboards are longer than their blackboards if a chalkboard manufacture specifies that their chalkboards have an average length of 72 inches with a standard deviation of 1 inch, and their whiteboards have an average length of 75 inches with standard deviation of 2 inches.
Ten pairs of points yielded a correlation coefficient of 0.790. If α = 0.05, which of the following statements is correct if H0 = ρ0?
Mr.Smith works on a temporary basis. The mean length of each job he gets is three months. If the amount of time he spends between jobs is exponentially distributed with distributed with mean 2, then at what rate does Mr. Smith get new job?
(a) Write the claim mathematically and identify Upper H 0and Upper H Subscript a. (b) Find the critical value(s) and identify the rejection region(s). (c) Find the standardized test statistic.
Is there evidence that men are more likely than women to make online purchases of books? Test an appropriate hypothesis and state your conclusion in context.
What is a run level? At this very moment, Fester Bester tester is sitting at the back of a lecture hall listening to a boring lecture on animal husbandry. To keep himself awake, Fester is playing a GUI-based game on his Linux laptop. What is the r..
you measure the lifetime of a random sample of 64 tires of a certain brand. the sample mean is x 50 months. suppose
A school principle claims that the students in her school are of above average intelligence. A sample of 24 students has scored an average of 107.5 IQ points.
What is the value of pairing and blocking? In practice, how can a design be blocked?
What is the likelihood that the mean annual precipitation during 25 randomly picked years will be less than 90.8 inches?
This problem related to Basic Statistics and it discuss about reasons, disadvantages and advantages of choosing qualitative and quantitative methods of data collection
scores on an endurance test for cardiac patients are normally distributed with mean185 and standard deviation5. a. what
A sample of 40 decaffeinated-coffee drinkers showed a mean of 5.84 cups per day, with a standard deviation of 1.36 cups per day. Use the .01 significance level. Compute the p-value.
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