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Mathematics

1 answer:

frosja888 [35]3 years ago

7 0

Answer:

wait do I simplify? I'm confused

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How many different groups of 6 shirts can be formed from 10 shirts for a display

Margarita [4]

I believe the shirts are different (in color, in size, in style,...), is so then:

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4 years ago

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A professional cyclist is training for the Tour de France. What was his average speed in kilometers per hour if he rode the 194

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Start with the distance equation D=RT, then plug in numbers

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To obtain information on the corrosion-resistance properties of a certain type of steel conduit, 45 specimens are buried in soil

Fiesta28 [93]

Answer:

The sample has not met the required specification.

Step-by-step explanation:

As the average of the sample suggests that the true average penetration of the sample could be greater than the 50 mils established, we formulate our hypothesis as follow

$H_0$ : The true average penetration is 50 mils

$H_a$ : The true average penetration is > 50 mils

Since we are trying to see if the true average is greater than 50, this is a right-tailed test.

If the level of confidence is α = 0.05 then the $z_\alpha$ score against we are comparing with, is 1.64 (this is because the area under the normal curve N(0;1) to the right of 1.64 is 0.05)