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Christine has always been weak in mathematics. Based on her performance prior to the final exam in Calculus, there is a 45% chance that she will fail the course if she does not have a tutor. With a tutor, her probability of failing decreases to 15%. There is only a 55% chance that she will find a tutor at such short notice.
a. What is the probability that Christine fails the course? (Round your answer to 4 decimal places.)
Probability
b. Christine ends up failing the course. What is the probability that she had found a tutor? (Round your answer to 4 decimal places.)
Construct a scatter diagram and describe what the scatter diagram tells you
Write down the value of the gradient of the regression line and explain what it means in this case. Is the constant or intercept value significant in this case? How do you know this?
in the design of an automobile radiator an engineer has a choice of using either a brass-copper alloy casting or a
Toolworkers are subject to work-related injuries. One disorder, caused by strains to the hands and wrists, is called carpal tunnel syndrome. It strikes as many as 23,000 workers per year.
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five samples of the material were tested in a structure and the average interior temperature reported was as follows
the life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard
If the sides of the square are lengthened by 5cm, the area becomes 144cm^2. Find the length of a side of the original square.
Let X be the difference and let Y be the sum of the number of heads obtained when Car- los and Michael each flip a fair coin twice. Describe the underlying space S of this random experiment and show the mapping from S to SXY , the range of the pair ..
Briefly describe how the standard deviation influences the outcome of the hypothesis test. How does standard deviation influence measures of effect size?
when conducting a paired-samples t test we can assess the practical importance of our obtained results by calculatinga.
Do Gunfire Deaths Occur More Often on Weekends? When Time magazine tracked U.S. deaths by gunfire during a one-week period, the results shown in the accompanying table were obtained.
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