Question

A laboratory in Washington is interested in finding the mean chloride level for a healthy resident in the state. A random sample of 100 healthy residents has a mean chloride level of 103 mEq/L. If it is known that the chloride levels in healthy individuals residing in Washington have a standard deviation of 39 mEq/, find a 95% confidence interval for the true mean chloride level of all healthy Washington residents. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. What is the lower limit of the 95% confidence interval? What is the upper limit of the 95% confidence interval? 5 >

Answer 1

Answer:-

no 100,= 103, S= 39, 2=0.05, tnb,ale = 1.984 .. the 95% confidence interval for the mean chloride level of all healthy washington residonts is 70 Ž - tn-t, ale siso, + tn-i, ak sigo) = 1-4 l 103 - 103 + (193= 1.304 you, 105 + 1-904 * ) = 0.75 1.984 x 39 1.984 x 39 J100 103- 7.7376, 103 + 7.7376 = 0.95 ( qs. 3 , 110.4 ) is the requized (.1 The howed limit of the 95% confidence infeeved The upper limit of the gs4 Confiefence interval 95.3 2017

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