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viva [34]
2 years ago
13

1 is what percentage of 50?

Mathematics
1 answer:
Zolol [24]2 years ago
3 0

Answer:

2

Step-by-step explanation:

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A manufacturer of piston rings for automobile engines frequently tests the width of the rings for quality control. Last week, a
kozerog [31]

Answer:

a) 74.0353 < u <  74.0367

b) 74.036 < u

Step-by-step explanation:

Given:

- Sample size n = 15

- Standard deviation s.d = 0.0001 in

- Sample mean x_bar = 74.036

Find:

A) Calculate the 99% two-sided confidence interval on the true mean piston diameter.

Solution:

- For 99% CI, We have a = 0.01 , and Z_a/2 = 2.58

------> (x_bar - Z_a/2*s.d / sqrt(n)) < u <  (x_bar + Z_a/2*s.d / sqrt(n))

------> (74.036 - 2.58*0.0001 / sqrt(15)) < u <  (74.036 + 2.58*0.0001 / sqrt(15))

------>                               74.0353 < u <  74.0367

Find:

B) Calculate the 95% one-sided lower confidence interval on the true mean piston diameter.

Solution:

- For 95% lower CI, We have a = 0.05 , and Z_a = 1.645

------> (x_bar - Z_a/2*s.d / sqrt(n)) < u

------> (74.036 - 1.645*0.0001 / sqrt(15)) < u

------>                               74.036 < u

5 0
3 years ago
A lorry driver charges $1800 to carry 60 tonnes of weight. How much will he charge for carrying 80 tonnes at the same rate
V125BC [204]

Answer:

$2400

Step-by-step explanation:

60 tonnes = $1800

80 tonnes = $?

= 1800 × 80/60

= $2400

4 0
3 years ago
Read 2 more answers
If the surface area is 6.8 ft², what is the area of each triangle?
Arisa [49]
Answer is 1.13 ft EX
6 0
2 years ago
Help me please and dont scam the points
kicyunya [14]

Answer:

So the answer is 14 seconds.

Step-by-step explanation:

Median means the number in the middle, and 17 and 11 are in the middle. Because there's 2 numbers in the middle, you need to average them to find the answer.

17+11=28

28 / 2= 14. So the answer is <u>14 </u><u>seconds</u>.

4 0
2 years ago
A relay team of 4 people runs 3 miles.If each person runs the same distance,How many miles does each person run?
Len [333]
Well first you have to divide 3 by 4, which is 0.75 or 3/4
6 0
3 years ago
Read 2 more answers
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