Compact fluorescent bulbs are more energy-efficient than incandescent bulbs, but they take longer to reach full brightness. The time it takes for a compact fluorescent bulb to reach full brightness is normally distributed with mean 29.9 seconds and standard deviation 4.9 seconds. Find and interpret the -score for x 26.1.

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Answer the multiple choice question. Compact fluorescent bulbs are more energy efficient than incandescent bulbs, but they take longer to reach full brightness.
Compact fluorescent bulbs are more energy-efficient than incandescent bulbs, but they take
longer to reach full brightness. The time it takes for a compact fluorescent bulb to reach full
brightness is normally distributed with mean 29.9 seconds and standard deviation 4.9 seconds.
Find and interpret the -score for x 26.1.
0.71: the time to reach full brightness is 0.71 standard deviations below the mean.
:= -0.78: the tìme to reach full brightness is 0.78 standard deviations below the mean.
== -0.78: the time to reach full brightness is 0.78 standard deviations above the mean.
:= 0.71: the time to reach full brightness is 0.71 standard deviations above the mean.
Transcribed Image Text:Compact fluorescent bulbs are more energy-efficient than incandescent bulbs, but they take longer to reach full brightness. The time it takes for a compact fluorescent bulb to reach full brightness is normally distributed with mean 29.9 seconds and standard deviation 4.9 seconds. Find and interpret the -score for x 26.1. 0.71: the time to reach full brightness is 0.71 standard deviations below the mean. := -0.78: the tìme to reach full brightness is 0.78 standard deviations below the mean. == -0.78: the time to reach full brightness is 0.78 standard deviations above the mean. := 0.71: the time to reach full brightness is 0.71 standard deviations above the mean.
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