Question

Question 3 (1 point)Abe tested 85 Brand X light bulbs to determine their life spans. The histogram belowshows the results of his test.Life Spans of85 Brand X Light Bulbs2422212019181716Number of Light Bulbs1312111010800 900 1000 1100 1200 1300Number of HoursApproximately what percent of Brand X light bulbs had life spans greater than orequal to 1000 hours?60%O 66%85%25%%

Answer 1

66%

Step-by-step explanation:

Taking into account the histogram, we can say that:

There are 13 light bulbs with a life span of between 800 and 900 hours

There are 16 light bulbs with a life span of between 900 and 1000 hours

There are 19 light bulbs with a life span of between 1000 and 1100 hours

There are 21 light bulbs with a life span of between 1100 and 1200 hours

There are 16 light bulbs with a life span of between 1200 and 1300 hours

Therefore, from the 85 light bulbs, 56 have a life span greater than or equal to 1000 hours because:

56 = 19 + 21 + 16

So, the percentage can be calculated as:

`(56)/(85)*100=65.88\text{ \% }\approx66\text{ \%}`

Then, the answer is 66%