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Chapter 9: Q.4 (page 546)

Haemoglobin is a protein in red blood cells that carries oxygen from the lungs to body tissues. People with less than 12 grams of haemoglobin per deciliter of blood (g/dl) are anaemic. A public health official in Jordan suspects that Jordanian children are at risk of anaemia. He measures a random sample of 50 children.

Short Answer

Expert verified

The mean value for haemoglobin is12g/dl as per null hypothesis and the mean value is greater than12g/dl.

Step by step solution

01

introduction

Given,

Haemoglobin is a protein in red blood cells that carries oxygen from the lungs to body tissues. People with less than12 grams of haemoglobin per deciliter of blood (g/dl) are anaemic.

02

explanation

calculating the null and alternative hypotheses

mean value for haemoglobin is 12g/dl as per null hypothesis

鈬�H0:渭=12

mean value for haemoglobin is greater than 12g/dl as per alternative hypothesis

鈬�Ha:渭<12

The mean value for haemoglobin is12 g/dl as per null hypothesis and the mean value is greater than 12g/dl.

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