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Katen [24]
3 years ago
9

Lin drove her car at a constant speed 164 miles in 4 hours. Manuel rode his motorcycle 140 miles in 3.5 hours. Who rode faster?

By how much?
Mathematics
1 answer:
Feliz [49]3 years ago
7 0

Answer: Manuel Because He was on the motor bike less. She was in the car driving for 4 HOURS he was on the bike less for a grand total of 3.5 HOURS so MANUEL was faster. :)

And he was faster by 30 minutes...

This is one of those questions where they try to put you focus on something else like speed speed does not matter!! :)

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Quality control. As part of a quality control process for computer chips, an engineer at a factory randomly samples 212 chips du
Scrat [10]

Answer:

See Explanation

Step-by-step explanation:

According to the Question,

  • Given That, As part of a quality control process for computer chips, an engineer at a factory randomly samples 212 chips during a week of production to test the current rate of chips with severe defects. She finds that 27 of the chips are defective.

(a) The sample is from all computer chips manufactured at the factory during the week of production. We might be tempted to generalize the population to represent all weeks, but we should exercise caution here since the rate of defects may change over time.

(b) The fraction of computer chips manufactured at the factory during the week of production that had defects.

(c) Estimate the parameter using the data: phat = 27/212 = 0.127.

(d) Standard error (or SE).

(e) Compute the SE using phat = 0.127 in place of p:

SE ≈ √(phat(1−phat)/n) = 0.023.

(f) The standard error is the standard deviation of phat. A value of 0.10 would be about one standard error away from the observed value, which would not represent a very uncommon deviation. (Usually beyond about 2 standard errors is a good rule of thumb.) The engineer should not be surprised.

(g) Recomputed standard error using p = 0.1: SE = 0.021. This value isn't very different, which is typical when the standard error is computed using relatively similar proportions (and even sometimes when those proportions are quite different!).

7 0
3 years ago
Find the radius r of the circle. Round your answer to the nearest tenth.
galina1969 [7]

Answer:

it might be 2.6

Step-by-step explanation:

im assuming the 16.3 is the circumfrence, so if you follow the formula for circumfrence (2πr) the radius would be 2.6. hope this is correct

4 0
3 years ago
Read 2 more answers
How many numbers facts can you find using this set of numbers. 4, 5, 8, 10, 40
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4 years ago
After the car payment is deducted, Michael take home pay will be $3060 per month. If his monthly car payment is 15% of his earni
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Answer:

Earnings current month of Michale = 3600

Step-by-step explanation:

Given that after the car payment is deducted, Michael take home pay will be $3060 per month. His monthly car payment is 15% of his earnings,

Let his earnings be 100

His car payment       15

His take home pay = 85

If 85 is take home pay earnings = 100

Hence if 3060 is take home pay earning = ?

This is a question of direct variation since if take home pay increases total earnings also increase.

So earnings = \frac{3060*100}{85} \\=3600

Earnings current month of Michale = 3600

5 0
3 years ago
At park junior high 10% or 160 of the students play a musical instrument how many students attended the school? Which statements
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Answer:

b,c,e

Step-by-step explanation:

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