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2 years ago

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Choose the appropriate word or phrase from the drop down menu to complete the sentences: The mean of the quantitative variable o

f interest in the population is called the [ Select ] . The mean of the quantitative variable of interest in the sample is called the [ Select ] . The standard deviation of the quantitative variable of interest in the population is called the [ Select ] . The standard deviation of the quantitative variable of interest in the sample is called the [ Select ] .

1 answer:

Tanzania [10]2 years ago

5 0

Answer:

1. Population mean

2. Sample mean

3. Population standard deviation

4. Sample standard deviation

Step-by-step explanation:

Required

Complete the gaps

The answer is self-explanatory.

All you need to do in this question is to look for the keywords (mean/standard deviation) and (population/sample).

In addition, the symbol of the parameters are:

1. Population mean $\mu$

2. Sample mean $\bar x$

3. Population standard deviation $\sigma$

4. Sample standard deviation $\sigma_x$

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The total cost for buying new sneakers for the basketball team an be found by using the function y=25x + 65, is where x is the n

gtnhenbr [62]

Answer:

$Domain\ =\ \{x: 9,10,11....16\}$

<em></em> $Range\ =\ \{y:290, 315,340.....465\}$ <em></em>

Step-by-step explanation:

Given

$y = 25x + 65$

Required

Determine the range and domain when x = 9 to 16

The domain is the set of

$Domain\ =\ \{x: 9,10,11....16\}$

Solving for the range;

<em>When x = 9</em>

<em></em> $y = 25 * 9 + 65$ <em></em>

<em></em> $y = 225 + 65$ <em></em>

<em></em> $y = 290$ <em></em>

<em></em>

<em>When x = 10</em>

<em></em> $y = 25 * 10 + 65$ <em></em>

<em></em> $y = 250 + 65$ <em></em>

<em></em> $y = 315$ <em></em>

<em></em>

<em>When x = 11</em>

<em></em> $y = 25 * 11 + 65$ <em></em>

<em></em> $y = 275 + 65$ <em></em>

<em></em> $y = 340$ <em></em>

<em></em>

<em>You continue till you get to x = 16</em>

<em>---</em>

<em>--</em>

<em>-</em>

<em>When x = 16</em>

<em></em> $y = 25 * 16 + 65$ <em></em>

<em></em> $y = 400 + 65$ <em></em>

<em></em> $y = 465$ <em></em>

<em></em>

<em>Hence; the range is</em>

<em></em> $Range\ =\ \{y:290, 315,340.....465\}$ <em></em>

3 0

2 years ago

this is kinda confusing but it says “if 1 cm represents 2 meters, how long would each measurement be on an actual basketball cou

frosja888 [35]

Answer:

28 m
15 m
24.8 m
1.0 m

Step-by-step explanation:

The given statement is the scale factor:

$\dfrac{\text{scale distance}}{\text{actual distance}}=\dfrac{1\text{ cm}}{2\text{ m}}$

This can be rearranged to the formula ...

$\text{actual distance}=\text{(scale distance)}\dfrac{2\text{ m}}{1\text{ cm}}$

Filling in the given scale distances, you find the actual distances to be ...

$\textbf{(a) }(14\text{ cm})\dfrac{2\text{ m}}{1\text{ cm}}=14\cdot2\text{ m}=28\text{ m}\\\\\textbf{(b) }(7.5\text{ cm})\dfrac{2\text{ m}}{1\text{ cm}}=7.5\cdot2\text{ m}=15\text{ m}\\\\\textbf{(c) }(12.4\text{ cm})\dfrac{2\text{ m}}{1\text{ cm}}=12.4\cdot2\text{ m}=24.8\text{ m}\\\\\textbf{(d) }(0.5\text{ cm})\dfrac{2\text{ m}}{1\text{ cm}}=0.5\cdot2\text{ m}=1.0\text{ m}\\\\$

4 0

2 years ago

Find the median of the following data 9,15,17,18,6,20,8,5,18,18,10,5,14,12,10,7

nlexa [21]

Answer:

11

Step-by-step explanation:

first, sort the numbers from lowest to highest.

5,5,6,7,8,9,10,*10,12*,14,15,17,18,18,18,20

the median is the number in the middle of the data

average if you need to (10+12 and divide by 2)

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2 years ago

"A state legislator wishes to survey residents of her district to see what proportion of the registered voters are aware of her

aliya0001 [1]

Answer:

The correct answer to the following question will be "384".

Step-by-step explanation:

We are having,

$P(-0.05$

On solving, we get

⇒ $P(\frac{-0.05}{\sqrt{\frac{pq}{n}}}$

⇒ $\frac{0.05}{\sqrt{\frac{p(1-p)}{n}}} =1.96$

On applying cross-multiplication, we get

⇒ $0.05^2=1.96^2\times \frac{P(1-p)}{n}$

⇒ $0.05^2n=1.96^2-1.96^2p^2$

⇒ $1.96^2p^2-1.96^2p+0.05^2n=0$ ...(equation 1)

When "p" seems to be the population proportion, (equation 1) approach, which is special

∴ $b^2-4ac=0$

On putting the values in the above expression, we get

⇒ $(1.96)^4-4\times 0.05^2\times 1.96^2n=0$

⇒ $1.98^2-4\times 0.05^2n=0$

⇒ $n=\frac{1.96^2}{4\times 0.05^2}$

⇒ $n=384.16=384$

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2 years ago

Belle deposited money into a savings account. This table gives the value of her account for the first 14 months after the initia

UkoKoshka [18]

Answer:

The answer is B 200

Step-by-step explanation:

i just took the test so yah :)

6 0

2 years ago