Harold took five different samples of thirty-five randomly selected students from the 520 students he surveyed. The means of the samples are shown below.

Sample

Sample 1

Sample 2

Sample 3

Sample 4

Sample 5

Mean

3.4

3.2

4.1

4.6

3.1

The predicted mean of the population will fall between

3.1 and

15

d!

Step-by-step explanation:

just took the test! gl

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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