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vodka [1.7K]
2 years ago
6

Out of sample of 500 people, 25% exercise daily. What is the confidence interval for the population mean of people that exercise

daily, given a confidence level of 95%?
Cl = (20.98%, 30.02%)
CI = (21.81%, 28.19%)
Cl = (21.20%, 28.80%)
CI = (20.01%, 29.99%)
​
Mathematics
1 answer:
Scorpion4ik [409]2 years ago
7 0

Answer:

The answer is C

Step-by-step explanation:

Its correct

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BARSIC [14]

Answer:

Step-by-step explanation:

5x + 2 - 3x - 1 = 3x + 2

5x - 3x - 3x = - 2 + 1 + 2

5x - 6x = 1

-1x = 1

x = 1 / -1

x = -1

7 0
2 years ago
Two angles are supplementary. The larger angle is 33 degrees more than 6 times the smaller angle. Find the measure of each angle
noname [10]

Sum of two angles that are supplementary = 180°

Let the smaller angle be = x

Let \:  the  \: smaller \:  angle \:  be \:  =  \: x

then \: the \: larger \: angle \:  = 6x + 33

<h3>Their sum :</h3>

x + 6x + 33 = 180

7x + 33 = 180

7x = 180 - 33

7x = 147

x =  \frac{147}{7}

x = 21

Using this let us find the measures of the smaller angle and bigger angle .

smaller \: angle \:  = x = 21°

larger \: angle \:  = 6x + 33 = 6 \times 21 + 33 = 126 + 33 = 159°

∴ The measure of the two angles are = 21° and 159° .

3 0
3 years ago
40% of OatyPop cereal boxes contain a prize. Hannah plans to keep buying cereal until she gets a prize. What is the probability
AnnZ [28]

Answer: Use a random number generator ranging from 1 to 10 and assign 1 through 4 as the prize and 5 through 10 as no prize.


Step-by-step explanation:

I just did the i-ready lesson, here you go mate! ^-^

4 0
3 years ago
Read 2 more answers
A square is made up of an L-shaped region and three transformations of the region. If the perimeter of the square is 40 units, w
Mila [183]

Answer:

20 units

Step-by-step explanation:

This implies that the square can be divided into four equal L-shaped regions. These regions with respect to transformation forms a square.

Perimeter of the square is 40 units. Since a square has equal length of sides, thus each side of the square is 10 units.

Thus, each L-shape region has dimensions; 8 units, 5 units, 5 units and 2 units.

Perimeter of each L-shape region = the addition of the length of each side of the shape

Perimeter of each L-shape region = 8 + 5 + 5 + 2

                                                         = 20 units

3 0
3 years ago
On a coordinate plane, 2 lines are shown. Line P Q has points (negative 5, 3) and (5, 1). Line R S has points (negative 4, negat
kati45 [8]

Answer:

They are not parallel because their slopes are not equal

Step-by-step explanation:

3 0
2 years ago
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