Suppose X~N(μ=10,σ=2). Find P(X> 11.6). Round you answer to 3 decimal places. Group of answer choices 0.788 0.212 0.831 0.169 0.581
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- Since the z score for the tallest man is z= __________and the z score for the shortest man is z=___________, the tallest or shortest man had the height that was more extreme. (Round to two decimal places.)A blood pressure measurement consists of two numbers: the systolic pressure, which is the maximum pressure taken when the heart is contracting, and the diastolic pressure, which is the minimum pressure taken at the beginning of the heartbeat. Blood pressures were measured, in millimeters of mercury (mmHg), for a sample of 10 adults. The following table presents the results. ---Predict the diastolic pressure for a patient whose systolic pressure is 145 millimeters. Round the answer to one decimal place.A woman is told that her weight has a standard score (\\( z \\)‑score) of \\( −1.5 . \\) This means that:
- Suppose John has a torn tendon and is facing surgery to repair it. The surgeon explains the risks to John: infection occurs in 2% of operations, the repair fails in 12%of operations, and both infection and failure occur together in 1.28% of operations. What percentage, ?,of these operations succeed and are free from infection? Please round your answer to the nearest two decimal places. ?=Suppose John has a torn tendon and is facing surgery to repair it. The surgeon explains the risks to John: infection occurs in 3%3% of operations, the repair fails in 12%12% of operations, and both infection and failure occur together in 0.51%0.51% of operations. What percentage, ?,P, of these operations succeed and are free from infection? Please round your answer to the nearest two decimal places. P=Jennifer wants to estimate the percentage of parents that use cloth diapers. She asks a randomly selected group of 200 parents whether or not they use cloth diapers. What is the parameter?
- Waht sould we do with a large P-value?A physician wants to test if temperature has an effect on heart rate. In order to do this, she compares the heart rate in beats per minute of several random volunteers after a period of time in a room with a temperature of 50∘F and after a period of time in a room with a temperature of 75∘F. Suppose that data were collected for a random sample of 11 volunteers, where each difference is calculated by subtracting the heart rate in beats per minute in the 50∘F room from the heart rate in beats per minute in the 75∘F room. Assume that the populations are normally distributed. The test statistic is t≈5.627, α=0.05, the corresponding rejection regions are t<−2.228 and t>2.228, the null hypothesis is H0:μd=0, and the alternative hypothesis is Ha:μd≠0. Which of the following statements are accurate for this hypothesis test in order to evaluate the claim that the true mean difference between the heart rate in the 75∘F room and the heart rate in the 50∘F room is significantly not equal to…There are 5000 observations in a data set. 10% of the data are “1”s, while the rest are “0”s. If we oversample “1”s to 50%, how many data points will be excluded from the analysis? Assume that the original percentages of “1” and “0” are restored in the validation data. Show all calculations.
- A physician wants to test if temperature has an effect on heart rate. In order to do this, she compares the heart rates in beats per minute of several random volunteers after a period of time in a room with a temperature of 50∘F and after a period of time in a room with a temperature of 75∘F. Suppose that data were collected for a random sample of 11 volunteers, where each difference is calculated by subtracting the heart rate in beats per minute in the 50∘F room from the heart rate in beats per minute in the 75∘F room. Assume that the populations are normally distributed. The physician uses the alternative hypothesis Ha:μd≠0. Suppose the test statistic t is computed as t≈5.627, which has 10 degrees of freedom. What range contains the p-value?The Department of Health wishes to determine the percentage, p, of the general population who are infected by Cooties during a recent outbreak. The test for Cooties is known to be 99% accurate given that a patient is infected and 90% accurate given that a patient is not infected. The results of the tests are returning at 15% positive.Suppose a new drug is intended to improve walking distance in patients with Parkinson’s Disease. A researcher measures patients’ walking distance in feet before and after trying the drug for 9 weeks. ID Pre Post 1 40 100 2 30 140 3 50 80 4 65 80 5 15 100 What is the value of tcrit ?
