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vaieri [72.5K]
3 years ago
10

An 80% confidence interval for a proportion is found to be (0.42, 0.48) . What is the sample proportion ?

Mathematics
1 answer:
ddd [48]3 years ago
6 0

Answer:

0.45, thats what we got

Step-by-step explanation:

a p e x

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44 students completed some homework and the histogram shows information about the times taken. Work out an estimate of the inter
Vilka [71]

Answer:

q1=11

q3= 33

Step-by-step explanation:

The data set has 44 number of students. The first quartile is 25 %  of the numbers in the data set . So

25 % of 44 = 25/100 * 44= 0.25 *44 = 11

So the first quartile lies at 11.

Similarly the third quartile lies at the 75 % of the numbers of the data set . So

75 % of 44 = 75/100 * 44= 0.75 *44 = 33

So the third quartile lies at 33.

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3 years ago
wilbur has sold 100, 42,87, and 66 appliances in the last four months, respectively. How many appliances will he need to sell th
Marizza181 [45]

Answer:

59

Step-by-step explanation:

1) so you start with the mean being 72x5=360

2)100+42+87+66=295

3) 360-295=65

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5 0
3 years ago
A triangle has an angle that measures 40°. The other two angles are in a ratio of 11:17. What are the measures of those two angl
Feliz [49]
<span>The measure of one angle of a triangle is 108. The measures of the other two angles are in a ratio of 1:5
108 + x + 5x = 180</span>
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3 years ago
What is the median and mode of 27 45 33 52 29 40 96 47 40 38
Rus_ich [418]

Answer:

Median: 40

Mode: 40

Step-by-step explanation:

6 0
3 years ago
A lot for sale is shaped like a trapezoid. The bases of the trapezoid represent the widths of the front and back yards. The widt
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Answer

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Step-by-step explanation:

1. set up A=1/2 H(b1+b2)

2. 6000=1/2 2x (2x+x)

3. 12000=6x^2

4.2000 = x^2

5. x=20 square root 5

8 0
4 years ago
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