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kicyunya [14]
2 years ago
6

A car manufacturer crash tests a certain model of car and measures the impact force. The test and model in question produce impa

ct forces that are normally distributed with a mean of 30 metric tons and a standard deviation of 1.5 metric tons. Suppose that the manufacturer tests a random sample of 3 cars and calculates the sample mean impact force. What will be the shape of the distribution of the sample mean?
a.Skewed to the left
b.Skewed to the right
c.Approximately normal
d.Unknown, we don’t have enough information to determine the shape
Mathematics
1 answer:
SIZIF [17.4K]2 years ago
8 0

Answer:

c.Approximately normal

Step-by-step explanation:

The manufacturer had done some test and the result is that the impact forces of the car are normally distributed. Since the sample of the test will be the same kind of car, then the distribution type of the sample will be normal too. Normal distribution will not be skewed to right or left, the data will look like a symmetrical bell shape.

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An inspector checks 98 cell phones and finds 2 of them not working. If a company
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Answer:

17

Step-by-step explanation:

Use ratio method

98:2

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8 0
2 years ago
The total cost of a shirt and a tie was $75.62. if the price of the shirt was $4.02 less than the tie, what was the price of the
kifflom [539]
--------------------------------------------
Define x:
--------------------------------------------
Let the tie be x
Tie = x
Shirt = x - 4.02

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Construct equation :
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The sum of the shirt and tie is $75.62
x + x -4.02 = 75.62
2x - 4.02 = 75.62
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Find the cost of tie and shirt :
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Shirt = x - $4.02 = $39.82 - $4.02 = $35.80

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Answer: The price of the short is $35.80
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2 years ago
Ronald Fast Food randomly selected %20, percent of locations and asked the manager about the most popular meat. Of the locations
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8 0
2 years ago
___ cosb =1/2 sin(a+b)+sin(a-b)?
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That would be sina.

Step-by-step explanation:

sin(a+b) = sinacosb + cosasinb

sin(a-b) = sinacosb -  cosasinb

Adding we get  sin(a+b) + sin(a-b) = 2sinaccosb

so sinacosb = 1/2sin(a+b) + sin(a-b)

8 0
2 years ago
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Alika [10]

Answer: 18. 75

Step-by-step explanation:

plz follow my table format here i will be delighted to share

cp  percent  fraction   sp

          -12         88/100  16. 50

100*16.50 /88= 18.75

7 0
2 years ago
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