Question

s Question Completion Status: QUESTION 6 Relief agency workers are feeding undernourished children in several parts of the world. An undernourished 3 year old in Syria weighed 9 kg, where the mean weight for healthy three-year olds is 13 kg and the standard deviation is 1.25 kg. In India, an undernourished child weighed 7.8 kg. The healthy Indian three-year olds have a mean weight of 12 kg and a of 1.4 kg Which child's low weight is more extremely low, relative to the population of children in his country? O A Indian, because he weighs less. Syrian, because his weight is 3.2 standard deviations below the mean for his country OCWe need to know more about micronutrient deficiencies to answer this question. O D. Indian, because he weighs 42 pounds less than average, and the Syrian is only 4 pounds less than average QUESTION 7 1 poir The proportion of observations from a standard Normal distribution that takes values less than 0.67 is, rounded to two decimal places, about what number? (Use a calculator.) 1 poin QUESTION 8 The proportion of observations from a standard Normal distribution that take values larger than-2.11 is, rounded to two decimal places, about what number? (Use a calculator.)

Answer 1

Solution11:

P(55<X<69)

USing R software execute below code

library(tigerstats)
pnormGC(c(55,69),region="between",mean=65,sd=3.5,graph=TRUE)

Output:

0.8713137

Answer:0.87

Solution12:

z score for 2 percentile is

qnorm(0.98)

Z=2.053749

But z=x-mean/sddev

2.053749=x-70.2/2.8

x=2.053749*2.8+70.2

X= 75.9505

X=75.95 inches

MARK OPTION B

About 75.95 inches