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Alika [10]
3 years ago
13

Pleaseeee help meeeeeee

Mathematics
1 answer:
Allisa [31]3 years ago
8 0
Take your choice of the trig function you would like to use.
  ∠B = arcsin(24/26) = arccos(10/26) = arctan(24/10) ≈ 67.38°
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vitfil [10]

Z value is a numerical  measurement that describe a value relationship to the mean of a group of values. The standard deviations is 1.25 above the mean is 14,500 hours.

<h3>Given information-</h3>

The mean for the bulb is 12,000 hours.

The standard deviation for the bulb is 2000 hours.

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To find out the how many standard deviation is 14500 mean away from the mean the z value of the mean should be calculated.

<h3>Z value</h3>

Z value is a numerical  measurement that describe a value relationship to the mean of a group of values. Z value is the ratio of the difference of the sample value x and mean \mu to the standard deviation. Thus the z value for the given mean \sigma is,

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