The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average,the reduction in systolic blood pressure is 38.6 for a sample of size 28 and standard deviation 16.6.Estimate how much the drug will lower a typical patient's systolic blood pressure (using a 90% confidencelevel). Assume the data is from a normally distributed population.Enter your answer as a tri-linear inequality accurate to three decimal places.Add WorkCheck Answerhyp

Given: n= 28.0 , x̄= 38.6 s= 16.6 degree of freedom=n-1= 27.0 At 90.0 % confidence level with…

Answered: The effectiveness of a blood-pressure…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The distribution of weights for newborn babies is approximately normally distributed with a mean of 7.3 pounds and a standard deviation of 0.7 pounds. The middle 95% of newborn babies weigh between , and , pounds. What percent of newborn babies weigh less than 5.9 pounds? Approximately 50% of newborn babies weigh more than , pounds
The effectiveness of a blood pressure drug is being investigated. an experimenter finds that on average the reduction in systolic blood pressure is 62.4 for a sample of size 335 and a standard deviation 7.3. estimate how much the drug will lower a typical patients systolic blood pressure using a 98% confidence level. answer as a try linear inequality accurate to one decimal place.
You measure 40 turtles' weights, and find they have a mean weight of 66 ounces. Assume the population standard deviation is 13.5 ounces. Based on this, construct a 99% confidence interval for the true population mean turtle weight. Give your answers as decimals, to two places + ounces
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Please answer the following: You can use the graphing calculator-just explain how to input into calculator. A tire manufacturer beleives that the tread life of its snow tires can be described by a normal model with a mean of 32,000 miles and standard deviation of 2,500 miles. a) If you buy a set of these tires, would it be reasonable for you to hope that they last 40,000 miles? Explain. b) What proportion of these tires can be expected to last less than 30,000 miles? c) What proportion of these tires can be expected to last between 30,000 and 35,000 miles? d) Estimate the IQR of the tread lives. e) In planning a marketing strategy, a local tire dealer wants to offer a refund to any customer whose tires fail to last a certain number of miles. However, the dealer does not want to take too big a risk. If the dealer is willing to give refunds to no more than 1 of every 25 customers, for what mileage can he be guaranteed these tires to last?
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a laboratory tested 36 chicken eggs and found that the mean amount of the cholesterol was 230 mg with s = 20 mg. Find a 90% confidence interval for the true mean cholesterol content of an egg.

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