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shtirl [24]
3 years ago
14

A company manufactures ball bearings for precision machines. The average diameter of a certain type of ball bearing should be 6.

0 mm. To check that the average diameter is correct, the company formulates a statistical test. a. What is the sampling distribution of the mean score x of a sample of 50 ball bearings given the standard deviation is 0.7 mm. b. State the null and alternative hypothesis. c. Suppose that one sample data gives x
Mathematics
1 answer:
Sindrei [870]3 years ago
6 0

Answer:

(a) =210

(b) = 0.11

Step-by-step explanation:

Sampling distribution of the mean = 50 × 6 × 0.7= 210

Now to get the null divide 0.7 by 6

This gives 0.11

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Answer:

x = 130

Step-by-step explanation:

Sum of all the angle of quadrilateral = 360°

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x = Reflex ∠ADC

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saveliy_v [14]

Answer:

172.83 kg

Step-by-step explanation:

A cylindrical container has a radius (r) of 0.3 meter and a height (h) of 0.75 meter and density of 815 kg/m³.

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Answer:

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