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kodGreya [7K]
4 years ago
7

Lunch A survey showed that 30% of students bring their lunch to school. The survey polled 300 students. How many of the 300 stud

ents do not bring their lunch to school?
Mathematics
1 answer:
Nana76 [90]4 years ago
5 0
Turn 30% into a decimal and then multiply it by 300.

300 x .3 = 90
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The Paralyzed Veterans of America is a philanthropic organization that relies on contributions. They send free mailing labels an
lions [1.4K]

Answer:

Confidence interval:  (0.04649,0.04913)

Step-by-step explanation:

We are given the following in the question:

Sample size, n =  100,000

Number of people who donated, x = 4781

\hat{p} = \dfrac{x}{n} = \dfrac{4781}{100000} = 0.04781


95% Confidence interval:

\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

Putting the values, we get:

0.04781
\pm 1.96(\sqrt{\dfrac{0.04781
(1-0.04781
)}{100000}})\\\\=0.04781
\pm 0.00132\\\\=(0.04649,0.04913)

is the required 95% confidence interval  for the true proportion of their entire mailing list who may donate.

3 0
3 years ago
Please help me guys, thanks
mr_godi [17]

Answer:

R = 0.06

Step-by-step explanation:

Hello

If, I = PRT

then,

900 = (7500)*R*2

R = 900/15000

R = 0.06

Best regards

6 0
3 years ago
What improper fraction goes with 1 and three fourths
Katyanochek1 [597]
7/4 because you times 4 and 1.then add 3 and you get 7 so 7/4
7 0
4 years ago
What is an exponential decay function?
Vikki [24]

Answer:

In mathematics, exponential decay describes the process of reducing an amount by a consistent percentage rate over a period of time. It can be expressed by the formula y=a(1-b)x wherein y is the final amount, a is the original amount, b is the decay factor, and x is the amount of time that has passed.

Step-by-step explanation:

5 0
3 years ago
H(x)=x•2+1 k(x)=x-2<br> (H+k)(2)
slavikrds [6]

Is it a true or false? If yes, the answer is false

If u have to solve the answer will be hx=x.2+kx=x-hk2

7 0
3 years ago
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