A random variable X follows normal distribution with the mean 100 and standard deviation 4. Find the probability that X is more than 95? O A. 0.8500 O B. 0.8944 OC.0.4772 O D. 0.5944
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- Systolic blood pressure readings are normally distributed with a mean of 121 and standard deviation of 15. If a person from the population was selected at random, find the probability that their blood pressure is in the acceptable range (between 114 and 140) for an athletic activity. A. Label and shade the normal distribution curve to model this problem.Assume a normal distribution tus u 80 and o 10. What is the probability of randomly selecting a score greater than 90 from this distribution? Op-0.6915 Op-0.1587 Op-0.8413 Op-03085A dishwasher has a mean lifetime of 10 years with an estimated deviation of 2.05 years. The lifetime of a dishwasher is normally distributed. Supposed you are manufacturer and you take a sample of 10 dishwashers that you made. Find the probability that the sample would have a mean lifetime less than 9.73 years? Round to four decimal places.
- Normal probability distribution with a mean of 0deg. C and a standard Deviation of 1ْ C. A thermometer is randomly selected and tested. find the probability of each reading between -1.25 and 2.00 .8716 .8083 .6251 .0965A random variable X follows the uniform distribution with a lower limit of 750 and an upper limit of 800. a. Calculate the mean and the standard deviation for the distribution. (Round intermediate calculation for standard deviation to 4 decimal places and final answer to 2 decimal places.) Mean Standard deviation ces b. What is the probability that X is less than 770? (Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) Probability Mc Graw Hill Liducation Type here to search 6. (? 653 2/21/20 60 7. 1ock E U home F enter D GO H. K pause C * shift alt ctriAssume the random variable X is normally distributed, with mean µ = 57 and standard deviation o=6. Find the 7th percentile. The 7th percentile is (Round to two decimal places as needed.) www
- A population of values has a normal distribution with mean 191.4 and standard deviation of 69.7. A random sample of size n = 153 is drawn. A. Find the probability that a single randomly selected value is between 188 and 206.6 round your answer to four decimal places. P=______________ B. Find the probability that a sample of size n=153 is randomly selected with a mean between 188 and 206.6. Round your answer to four decimal places. P=________________Assume that adults have IQ scores that are normally distributed with a mean of μ= 100 and a standard deviation σ = 20. Find the probability that a randomly selected adult has an IQ less than 120. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected a (Type an integer or decimal rounded to fo Standard Normal Table (Page 1) NEGATIVE z Scores Standard Normal (z) Distribution: Cumulative Area from the LEFT .00 .01 02 .03 .04 .05 .06 .07 .08 .09 -3.50 and lower .0001 -3.4 .0003 .0003 .0003 .0003 .0003 .0003 .0003 .0003 .0003 0002 -3.3 .0005 .0005 .0005 .0004 .0004 .0004 0004 .0004 0004 .0003 -3.2 .0007 .0007 .0006 .0006 .0006 .0006 0006 .0005 .0005 0005 -31 0010 .0009 .0009 .0009 .0008 .0008 .0008 .0008 .0007 .0007 -3.0 .0013 0013 .0013 0012 .0012 .0011 .0011 .0011 0010 0010 -2.9 .0019 .0018 0018 .0017 .0016 .0016 0015 .0015 .0014 .0014 -2.8 .0026 .0025 .0024 .0023 .0023 .0022 .0021 .0021 .0020 0019 -2.7 .0035 .0034 .0033 .0032 .0031…The mean amount of time it takes a kidney stone to pass is 12 days and the standard deviation is 4 days. Suppose that one individual is randomly chosen. Let X = time to pass the kidney stone. Round all answers to 4 decimal places where possible.a. What is the distribution of X? X ~ N( ___________ , __________ )b. Find the probability that a randomly selected person with a kidney stone will take longer than 10 days to pass it. __________c. Find the minimum number for the upper quarter of the time to pass a kidney stone.______________ days.