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Anna007 [38]
3 years ago
9

g A carload of steel rods has arrived at Cybermatic Construction Company. The car contains 50,000 rods. Claude Ong, manager of Q

uality Assurance, directs his crew measure the lengths of 100 randomly selected rods. If the population of rods has a mean length of 120 inches and a standard deviation of 0.05 inch, the probability that Claude's sample has a mean greater than 120.0125 inches is _____________.
Mathematics
1 answer:
Margarita [4]3 years ago
5 0

Answer:

0.0062

Step-by-step explanation:

Given that a carload of steel roads has arrived at Cybermatic Construction Company. The car contains 50,000 rods

Sample size =100

\bar x=120"

s =0.05"

Sample mean follows a N(120,0.05/sqrtn)

sample std error=\frac{0.05}{\sqrt{100} } \\=0.005

P(\bar X>120.0125)=\\P(Z>\frac{120.0125-120}{0.005} \\=P(Z>2.5)\\=0.5-0.4938\\=0.0062

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Yuliya22 [10]

Check your answer. Is $15.75 a reasonable amount of interest? If Caroline had invested the $900 for a full year at 2% interest, the amount of interest would have been $18. Yes, $15.75 is reasonable.

Step-by-step explanation:

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3 years ago
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What is the solution of log2x + 6 8 = 3?
Fantom [35]

Answer:

<h2>x=-3</h2>

Step-by-step explanation:

log(2x + 6) +8 = 3

Solve this log equation for x

First subtract 8 from both sides

log(2x+6)= -5

Now we convert it into exponential form

If log(x) = a then 10^a = x

log(2x+6)= -5 becomes

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3 years ago
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frutty [35]

Answer:

The probability that he rolls a sum of 9 given the sample space is . 9/36, or 1/4.

What is the probability?

Probability determines the chances that an event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.

The probability that he rolls a sum of 9 = cubes that have a sum of 9 / total number of cubes

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5 0
2 years ago
The label on a medicine bottle lists the dosage as one-half ounce per 10 pounds of body weight. How many ounces is the proper do
ra1l [238]

Answer:

4.5

Step-by-step explanation:

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4 0
4 years ago
Due in half an Hour. Thanks for your help.
Alecsey [184]

Answer:

C and $320.45

Step-by-step explanation:

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And to get the b part of the question i just put the number in

b = 26 \times 10 + 3.5 \times 13 + 14.95 = 320.45

I'm not a 100% sure, sorry if it's wrong

7 0
3 years ago
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