Cost of Braces The average cost for teeth straightening with metal braces is approximately $5341. A nationwide franchise thin that its cost is below that figure. A random sample of 25 patients across the country had an average cost of $5251 with a standard deviation of $630. At a =0.10, can it be conduded that the mean is less than $5341? Assume that the population is approximately normally distributed. Part 1 of 5 (a) State the hypotheses and identify the claim. Ho: H = v $ 5341 not claim H: < v S 5341| claim This hypothesis test is a one-tailed v test. Part: 1/5 Part 2 of 5 (b) Find the critical value(s). Round the answer(s) to at least three decimal places. If there is more than one critical value, separate them with commas. Critical value(s):
Continuous Probability Distributions
Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.
Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
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