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A board of directors at the Anchor Pointe Marina is studying the usage of boats among its members. A sample of 30 members who have bots 10 to 20 feet in length showed that they used their boats an average of 11 days last July. The standard deviation of the sample was 3.88 days. For a sample of 40 members with 21 to 40 feet in length, the average number of days they used their boats in July was 7.67, with standard deviation of 4.42 days. At the 0.02 significance level, can the board of directors conclude that those with the smaller boats used their crafts more frequently?
Find the percentage of the total variation that cant explained by the linear relationship between the two variable.
What are examples in which non-parametric tests are used to analyze business related problems in general, and more specifically, problems related to marketing?
Compute the following .r = correlation between x and y = - 0.7 = mean of the values of x = 50.25 = mean of the values of y = 31.77 = standard deviation of the values of x = 15.85 = standard deviation of the values of y = 1.76 The slope of the leas..
Formulate and LP model for this problem using Excel. Sketch the feasible region for this problem using Excel. Find the optimal solution
Give a brief description of a real-world example in which one measure of central tendency provides useful information while another measure of central tendency provides meaningless (or even misleading) information.
The odds in favor of an event are the number of successes divided by the number of failures. The probability of this event occurring is the number of successes divided by the sum of the number of successes and the number of failures.
According to an article, 19% of the entire US population have high-speed access to the Internet. Random samples of size 200 are selected from the US population.
A coin is flipped e times and heads (h) or tails (t) are recorded:
What is the probability that a randomly-selected truck travels between 30 and 60 thousand kilometres in one year. Standard deviation of 12.0 thousand kilometres.
A stock price is currently $100. Over each of the next two three-month periods it is expected to increase by 10% or fall by 10%. Consider a six-month European call option with a strike price of $105.
A college's data about incoming freshmen indicates that the mean of their high school GPA was 3.4, with a standard deviation of 0.35. Let X=the GPA of an incoming freshman. The students are randomly assigned to writing groups of size 49.
A sample of 10 observations is selected from a normal population for which the population standard deviation is known to be 4. The sample mean is 23. (Round your answers to 3 decimal places.) (a) The standard error of the mean is_____?
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