The physical plant at the main campus of a large state university recieves daily requests to replace fluorescent lightbulbs The distribution of the number of daily requests is bell - shaped and has a mean of 51 and a standard deviation of 9. Using the empirical rule , what is the approximate percentage of lightbulb replacement requests numbering between 51 and 78 ? Do not enter the percent symbol . Please help i have test

the forst and 3rd

step-by-step explanation:

this shows a reflection over the x-axis and is translated one unit down and 6 units to the right (x + 6, y - 1)

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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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step-by-step explanation: