Calculate a 95% confidence interval on the standard deviation of time until a tumor appearance. Assume population is approximately normally distributed.
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- The length of a movie file that is available for streaming is modeled using the normal distribution shown below. The mean of the distribution is 170.5 min and the standard deviation is 19.9 min, In the figure, V is a number along the axis and is under the highest part of the curve. And, U and W are numbers along the axis that are each the same distance away from V. Use the empirical rule to choose the best value for the percentage of the area under the curve that is shaded, and find the values of U, V, and W. Percentage of total area shaded: (Choose one) 100 120 140 160 180 200 220 240 ( min)A person with "normal" blood pressure has a diastolic measurement of 76 mmHg, and a standard deviation of 4.5 mmHg. Assume the population data in this scenario is normally distributed. Standard Normal Distribution Table a. What is the probability that a randomly selected person with "normal" blood pressure will get a diastolic result of over 80 mmHg, indicating the possibility of pre-hypertension? Mean of distribution = Standard deviation of distribution = z-score = Round to two decimal places if necessary P(Diastolic BP>80)=P(Diastolic BP>80)= Round to four decimal places if necessary b. If a patient takes his blood pressure every day for a week, what is the probability of getting an average diastolic blood pressure result of over 80 mmHg, assuming the patient has "normal" blood pressure? Mean of distribution = Standard deviation of distribution = Round to two decimal places if necessary z-score = Round to two decimal places if necessary P(Average…What does a statistically significant t test indicates?
- Overproduction of uric acid in the body can be an indication of cell breakdown. This may be an advance indication of illness such as gout , leukemia or lymphoma. Over a period of months an adult male patient has taken even blood tests for uric acid. The mean concentration was x =5.30mh/dL. The distribution of uric acid in healthy adult males can be assumed to be normal, with standard deviation =1.95mg/dL. Find a 95% confidence interval for the population mean concentration of uric acid in this patients blood What is margin of error? Lower limit? Upper limit? And margin of error?High density lipoprotein (HDL) in healthy males follows a normal distribution with a mean of 50 and a standard deviation of 8. What proportion of healthy males has HDL exceeding 60?approximate area under the normal distribution curve that falls within one standard deviation above and below the mean. Please give the shaded region.
- The processing time for the robogate has a normal distribution with mean 21 sec and standard deviation 3 sec. Find the probability that the next operation of the robogate will take 27 sec or less. Click the icon to view the standard normal distribution table. The probability isThe average yield of raspberries is 8.7 tons per acre with a population standard deviation of .6 tons per acre. Assume that raspberry yields are bell shaped symmetric use empirical rule! Explain why it’s it not possible to find the probability that a crop of raspberries yields at least 9 tons per acre.Some students paid a private tutor to help them improve their results on a certain mathematical test. These students had a mean change in score of + 18 points, with a standard deviation of 68 points. In a random sample of 100 students who pay a private tutor to help them improve their results, what is the likelihood that the change in the sample mean score is less than 10 points? Click the icon to view the table of normal curve areas. Normal Curve Areas P(x< 10) = (Round to three decimal places as needed.) 0. .00 .01 .02 .03 .04 .05 .06 .07 .08 .09 .0000 .0398 .0793 .1179 .1554 .1915 .0 .1 .0040 .0438 .0080 .0478 .0871 1255 .0160 .0557 .0948 .1331 .1700 2054 .0120 .0517 .0199 .0596 0987 1368 .1736 2088 .0239 .0636 1026 .1406 1772 2123 0279 .0675 1064 1443 1808 2157 .0319 0714 .1103 1480 1844 2190 0359 .0753 1141 1517 1879 2224 .2 .3 .0832 .1217 .1591 1950 .0910 1293 1664 1628 .5 .1985 2019 .2257 .2580 .2881 .3159 3413 2291 2611 .6 .7 .8 .9 1.0 2324 2642 2939 3212 3461 2357 2673 2967…
- CanCoke recently hired a consulting firm to see how well their products are doing on the market. In the United States last year, the study found that an average of 5,149 coke products were drank daily with a standard deviation of 252. Recall, pnorm(x, µ, o) = P(Y< x) and qnorm(p, µ, 0) = the pn percentile of the normal distribution that has mean, µ, and standard deviation, O. What is the Z-score of 4,125 cokes products?According to the empirical rule for population data that form a normal distribution, 95% of the values are approximately within which range? A ±2 standard deviations from the mean ±1 standard deviation from the mean (c) +3 standard deviations f rom the mean 1 +- standard deviation from the mean 2