The time it takes for a compact fluorescent bulb to reach full brightness is normally distributed with mean 29.9 seconds and standard deviation 4.1 seconds. Find and interpret the z-score for x = 26.4.
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A: As you mentioned g bit so i have solved only g bit.
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Q: The weights for a baby boy is normally distributed with a mean score of 7lbs and a standard…
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The time it takes for a compact fluorescent bulb to reach full brightness is
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- The mean growth of the thickness of trees in a forest is found to be .5 cm/year with a standard deviation of .1cm/year. What is the z-score corresponding to 1 cm/year?Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. x 0.9 A graph with a bell-shaped curve, divided into 2 regions by a line from top to bottom, on the right side. The region left of the line is shaded and labeled 0.9. The x-axis below the line is labeled "x". The indicated IQ score, x, is(Round to one decimal place as needed.)The mean growth of the thickness of trees in a forest is found to be .5 cm/year with a standard deviation of .1 cm/year. What is the z-score corresponding to 1 cm/year?
- The level of pesticides found in the blubber of whales is a measure of pollution of the oceans by runoff from land and can also be used to identify different populations of whales. A sample of 8 male minke whales in the West Greenland area of the North Atlantic found the mean concentration of the insecticide dieldrin to be x¯=354 nanograms per gram of blubber (ng/g). Suppose that the concentration in all such whales varies Normally with standard deviation σ=51 ng/g. Using software or Table C, find the 95% confidence interval to estimate the mean level of dieldrin. (Enter your answers rounded to two decimal places.) lower bound: upper bound:The mean score on a driving exam for a group of driver's education students is 60 points, with a standard deviation of 4 points. Apply Chebychev's Theorem to the data using k=2. Interpret the results.
