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3 years ago

Kalani had 3/5 pan of brownies. She sent 1/3 of

Mathematics

1 answer:

frozen [14]3 years ago

8 0

I think its.......5/15=1/3

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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

-950-?= -379<br><br><br> Help Will give brainliest!!

Karolina [17]

Answer: -571

Step-by-step-explanation:
-950 - (-571) = -379
-950 + 571 = -379
Hope this helps :)

8 0

2 years ago

18. At a putt-putt course there are 50 yellow golf balls, 45 red golf

TEA [102]

Here is the answer to you question

5 0

3 years ago

Help ASAP!!!

RideAnS [48]

Answer:

True

Step-by-step explanation:

4 0

3 years ago

Pls if u answer ill give brainliest :))) PLSS

AURORKA [14]

Answer:

Substitute values first

5 0

2 years ago