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likoan [24]
3 years ago
7

(HELP WITH THIS )Suppose ages of cars driven by company employees are normally distributed with a mean of 8 years and a

Mathematics
1 answer:
8090 [49]3 years ago
4 0

Answer:

Let say 75% of  cars older than age  = Y  years

than 25 % cars of age less than Y Years

Z score corresponding to 25 %  =  -0.674

Z score = (Value - Mean) /SD

Value = Y

Mean = 8

SD = 3.2

Z score = -0.674

-0.674 = (Y - 8)/3.2

=> Y =5.84 Years

=> Y ≈ 5.9 Years

Approximately 75% of cars driven by company employees are older than  about 5.9 years

Learn More:

Assume that adults have iq scores that are normally distributed with ...

brainly.in/question/11133397

Use technology or the z-distribution table on pages A-1 to A-2 in the ...

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When the chords intersect inside the circle the sum of the vertical angles and the sum of the referenced arcs are the same.  Since the vertical angles are congruent, each is half the sum of the referenced arcs.

Similarly when the chords intersect outside the circle, the angle is half the <em>difference</em> of the arc measures.

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7.  There's a special rule for this case but we can treat it as outside, little arc x, big arc 360-x,

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10.  Remaining triangle angle is 180 - 62 - 28 = 90.  Arc that subtends it is double, 180.  That means the long side is a diameter.

11.  Remaining triangle angle is 180 - 50 - 70 = 60. x=120, y=100, z=140

12.  Remaining arc 360 - 170 - 90 = 100.  Angles are half.

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