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Whitepunk [10]
3 years ago
14

I have a quation about functions.

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
6 0
Step by step...shows how to get -22/7

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2. P337. 23. A large box contains 10,000 ball bearings. A random sample of 120 is chosen. The sample mean diameter is 10 mm, and
Rashid [163]

Answer:

B is True

A, C. D are false

Step-by-step explanation:

Given :

Sample size, n = 120

Mean diameter, m = 10

Standard deviation, s = 0.24

Confidence level, Zcritical ; Z0.05/2 = Z0.025 = 1.96

The confidence interval represents how the true mean value compares to a set of values around the mean computed from a set of sample drawn from the population.

The population here is N = 10000

To obtain

Confidence interval (C. I) :

Mean ± margin of error

Margin of Error = Zcritical * s/sqrt(n)

Margin of Error = 1.96 * 0.24/sqrt(120)

Confidence interval for the 10,000 ball bearing :

10 ± 1.96 * (0.24) / sqrt(120)

Hence. The confidence interval defined as :

10 ± 1.96 * (0.24) / sqrt(120) is the 95% confidence interval for the mean diameter of the 10,000 bearings in the box.

4 0
2 years ago
The quotient of 20 and four, multiplied by 10 as an expression
Genrish500 [490]
(20 / 4 )x 10

5 x 10

50
5 0
3 years ago
the Millers drove 105 miles on 4 gallons of gas. at this rate, how many miles can they drive on 6 gallons of gas.
Alinara [238K]

Answer:

157.5 miles with 6 gallons

Step-by-step explanation:

105miles / 4gallons = 26.25miles per gallon

26.25miles per gallon * 6miles = 157.5 miles

5 0
3 years ago
Read 2 more answers
2, -2, 2, -2, common ratio
adelina 88 [10]
To get -2 from 2, you would multiple by -1.

To get 2 from -2, you also would multiple by -1.

Ad infinitum.

So the common ratio is -1.

Hope this helps.
8 0
3 years ago
Please help, Find the perimeter of the figure
kicyunya [14]

Answer:

17 in

Step-by-step explanation:

Rectangle:

(4*2)+(5*2)

8+10 =18

Triangle:

5+4+3 =12

Both:

12+18 = 30

minus where the rectangle and triangle are together

30-3 = 17

8 0
2 years ago
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