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3 years ago

Explain how you would draw a box-and-whisker plot for the data below

1 answer:

8 0

You first need to put all the numbers in order from least to greatest, then you need to start the left whisker with the lowest number for this problem it would be 7 then you need to find first quartile, which is going to be the start of your box, find the median, which is the middle, of the box (a dotted line down the middle of the box) and the third quartile is going to be the closing of the box on the right side then you draw your whisker to the highest number which would be 43. to find first and third quartiles your multiply by either .25 for first quartile and .75 for third, I'm sure you know how to find median. :)

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The town of Hayward (CA) has about 50,000 registered voters. A political research firm takes a simple random sample of 500 of th

timama [110]

Answer: (0.076, 0.140)

Step-by-step explanation:

Confidence interval for population proportion (p) is given by :-

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

, where $\hat{p}$ = sample proportion.

n= sample size.

$\alpha$ = significance level .

$z_{\alpha/2}$ = critical z-value (Two tailed)

As per given , we have

sample size : n= 500

The number of Independents.: x= 54

Sample proportion of Independents $\hat{p}=\dfrac{x}{n}=\dfrac{54}{500}=0.108$

Significance level 98% confidence level : $\alpha=1-0.98=0.02$

By using z-table , Critical value : $z_{\alpha/2}=z_{0.01}=2.33$

The 98% confidence interval for the true percentage of Independents among Haywards 50,000 registered voters will be :-

$0.108\pm (2.33)\sqrt{\dfrac{0.108(1-0.108)}{500}}\\\\=0.108\pm2.33\times0.013880634\\\\=0.108\pm0.03234187722\\\\\approx0.108\pm0.032=(0.108-0.032,\ 0.108+0.032)=(0.076,\ 0.140)$

Hence, the 98% confidence interval for the true percentage of Independents among Haywards 50,000 registered voters.= (0.076, 0.140)

8 0

3 years ago

15) Tyler wants to ride the bumper cars 4 times and the Ferris wheel 8 times. It costs 6 tickets to ride the

MAVERICK [17]

Answer:

Tyler needs 48 tickets.

Step-by-step explanation:

6*4= 24

8*3= 24

24*2=48

4 0

2 years ago

Read 2 more answers

Need help, please answer!!!

RoseWind [281]

Find urban know first

7 0

3 years ago

What is the area, in square inches, of the rectangle below?

chubhunter [2.5K]

The answer would be D i believe

6 0

2 years ago

On average, Tony the turtle completes a 15-foot course in 1 minute, and Antonio the turtle completes an 18-foot course in 1 minu

marishachu [46]

Answer:

15 feet.

Step-by-step explanation:

Tony's speed = 15 ft/min.

Antonio's = 18 feet /min.

So in 5 minutes Tony travels 5*15 = 75 feet and Antonio travels 5*18 = 90 feet.

So the answer is 90-75 = 15 feet.

8 0

3 years ago