Solution-Give confidence interval for the mean blood

Give confidence interval for the mean blood phosphorus level

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Reference no: EM131745877

Problem - Blood phosphorus level in dialysis patients. Patients with chronic kidney failure may be treated by dialysis, in which a machine removes toxic wastes from the blood, a function normally performed by the kidneys. Kidney failure and dialysis can cause retention of phosphorus, which must be corrected by changes in diet. A study of the nutrition of dialysis patients measured the level of phosphorus in the blood of several patients on six occasions. Here are the data for one patient (in milligrams of phosphorus per deciliter of blood):

5.4 5.2 4.5 4.9 5.7 6.3

The measurements are separated in time and can be considered an SRS of the patient's blood phosphorus level. Assume that this level varies Normally.

(a) Give a 95% confidence interval for the mean blood phosphorus level.

(b) What sample size would be needed for a margin of error of 0.25 mg/dl for 95% confidence?

Reference no: EM131745877

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Give confidence interval for the mean blood phosphorus level

Reference no: EM131745877

Reference no: EM131745877

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