A laboratory in Colorado is interested in finding the mean chloride level for a healthy resident in the state. A random sample of 70 healthy residents has a mean mEq If it is known that the chloride levels in healthy individuals residing in Colorado have a standard deviation of 44 mEq find a 95% L chloride level of 99 confidence interval for the true mean chloride level of all healthy Colorado residents. Then give its lower limit and upper limit. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) Lower limit: || Upper limit:

Suppose we know that the mean score among the population of college students taking the GMAT test is 1000.  If the population standard deviation is 1200, and we take a sample of size 100, then what percentage of possible sample means that could be drawn from this population will be less than 1300?

An IQ test is designed so that the mean is 100 and the standard deviation is 24 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 95​% confidence that the sample mean is within 8 IQ points of the true mean. Assume tha  σ=24 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world calculation.The required sample size is enter your response here. ​(Round up to the nearest​ integer.) Would it be reasonable to sample this number of​ students? Yes. This number of IQ test scores is a fairly small number. No. This number of IQ test scores is a fairly small number. Yes. This number of IQ test scores is a fairly large number. No.This number of IQ test scores is a fairly large number.

The mean diastolic blood pressure for a random sample of 50 people was 84 millimeters of mercury. If the standard deviation of individual blood pressure readings is known to be 9 millimeters of mercury, find a 90% confidence interval for the true mean diastolic blood pressure of all people. Then give its lower limit and upper limit. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) Lower limit:| ? Upper limit:|