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.

Find the mean, variance, and standard deviation for each of the values n of p and when the conditions for the binomial distribution are met. Round your answers to three decimal places as needed. n=1010, p=0.12 find the mean, variance, standard deviation.

Using the square root of x sign above, you will be able to find symbols and equations.  Subscripts are also at the top.  X2    X2 Now that you have calculated SS. Calculate  variance and standard deviation using  the same distribution of scores as if it came from a sample.  3, 7, 8, 5, 6, 4, 9, 10, 7, 8, 6, 5

A collection of medical scores is Normal with Mean of 50 and Standard Deviation of 10; that is N(50, 10). Bertha’s score is 47.56  and Biff’s score is  56.82.  What is the probability that a randomly selected score will be greater that Bertha’s and less than Biff’s? Your answer should be correct to 4 places after the decimal point.                        ________________

Coming to School The time X it takes Mrs. Irvine to drive to work on a randomly selected day follows a distribution that is approximately Normal with mean 22 minutes and standard deviation 5.2 minutes (she is a Statistics teacher, after all): Once she parks in the back parking lot it takes her 4 more minutes to walk to her classroom. Let T = the total time it takes Mrs Irvine to reach her classroom on a randomly selected day, so T = X+4 Describe the shape, center, and variability of the probability distribution of T. Study habits Study habits are so important that Mrs. Irvine often considers implementing her own study at MNHS. Fortunately, the Survey of Study Habits and Attitudes is a psychological test that exists already. This test measures academic motivation and study habits_ The SSHA score F on a randomly selected female student at a large university has mean 120 and standard deviation 28, and the SSHA score M of a randomly selected male student at the university has mean 105 and…

Answer only b-d Suppose that the speed at which cars go on the freeway is normally distributed with mean 66 mph and standard deviation 6 miles per hour. Let X be the speed for a randomly selected car. Round all answers to 4 decimal places where possible.a. What is the distribution of X? X ~ N(66, 6)b. If one car is randomly chosen, find the probability that it is traveling more than 65 mph. __________c. If one of the cars is randomly chosen, find the probability that it is traveling between 68 and 72 mph. _____________d. 87% of all cars travel at least how fast on the freeway?__________  mph.

Please solve f and g sections

esc Suppose that the mean cranial capacity for men is 1180 cc (cubic centimeters) and that the standard deviation is 200 cc. Assuming that men's cranial capacities are normally distributed, complete the following statements. (a) Approximately 68% of men have cranial capacities between cand. (b) Approximately? Check ⠀ ! 1 Q A 1 N B of men have cranial capacities between 580 cc and 1780 cc. NO 2 W S X option command # 3 12 E D $ 4 C ♫ R LL F 24.0 % 5 V X T tv G 5 < 6 all 7/ MacBook Pro Y B ZAO & 7 H U N +00 8 J Submit Assignme © 2023 McGraw HILLC Al Rights Reservedem of Use Privacy Center Accessibl I ( M 9 K O ) O < I Save For Later H L P command : { I [ optio

K The IQ scores for a random sample of subjects with low lead levels in their blood and another random sample of subjects with high lead levels in their blood were collected. The statistics are summarized in the accompanying table. Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Complete parts (a) to (c) below. tcrunch @ W S OA. Ho: H₁ H2 H₁: H1 H2 = OC. Ho: P1 P2 H₁: H1 H₂ The test statistic is a. Use a 0.05 significance level to test the claim that the mean IQ score of people with low blood lead levels is higher than the mean IQ score of people with high blood lead levels. What are the null and alternative hypotheses? Assume that population 1 consists of subjects with low lead levels and population 2 consists of subjects with high lead levels. The P-value is State the conclusion for the test. Tech help ZO F3 (Round to two decimal places as needed.) (Round…

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