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3 years ago

11

A catalog is discounting all sweaters 25%. How much will you pay for a sweater that is regularly $49.99? (A) $24.99 (B) $37.49 (

C) $124.98 (D) $49.74

1 answer:

rodikova [14]3 years ago

6 0

B becuase of 49.99 times .75

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If rectangle is 12 inches long and 8 inches wide, what is the ratio of its length to its width?help

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12:8
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3:2

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3 years ago

When 258 college students are randomly selected and surveyed, it is found that 106 own a car. Find a 99% confidence interval for

juin [17]

Answer: 0.332 < p < 0.490

Step-by-step explanation:

We know that the confidence interval for population proportion is given by :-

$\hat{p}\pm z^*\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

, where n= sample size

$\hat{p}$ = sample proportion

z* = critical z-value.

As per given , we have

n= 258

Sample proportion of college students who own a car = $\hat{p}=\dfrac{106}{258}\approx0.411$

Critical z-value for 99% confidence interval is 2.576. (By z-table)

Therefore , the 99% confidence interval for the true proportion(p) of all college students who own a car will be : $0.411\pm (2.576)\sqrt{\dfrac{0.411(1-0.411)}{258}}\\\\=0.411\pm (2.576)\sqrt{0.00093829}\\\\= 0.411\pm (2.576)(0.0306315197142)\\\\=0.411\pm 0.0789=(0.411-0.0789,\ 0.411+0.0789)\\\\=(0.3321,\ 0.4899)\approx(0.332,\ 0.490)$

Hence, a 99% confidence interval for the true proportion of all college students who own a car : 0.332 < p < 0.490

3 0

3 years ago

Please solve this , i will mark brainliest

erastova [34]

C thank me later thanks

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3 years ago

Read 2 more answers

Un camion transporta aceite de oliva en un deposito con forma de cilindro de 1m de radio y 5m de altura . Si en cada viaje que r

goldfiish [28.3K]

Answer:

15.71 metros cúbicos de aceite transportará el depósito del camión.

Step-by-step explanation:

Un camión transporta aceite de oliva en un deposito con forma de cilindro de 1 m de radio y 5 m de altura.

Para calcular la cantidad de aceite que transportará se debe calcular el volumen del depósito, siendo con forma de cilindro. El volumen de dicha figura es calculada como V=π*r²*h, donde r es el radio y h es la altura.

En este caso, el volumen del depósito cilíndrico es:

V=π*( 1 m)²*5 m

Resolviendo:

V=15,71 m³

<u><em>15.71 metros cúbicos de aceite transportará el depósito del camión.</em></u>

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3 years ago

HELP ME WITH THIS QUESTION! DO IT ON PAPER AND SHOW ME WHAT YOU DID AND PLEASE EXPLAIN

tia_tia [17]

Here, it is solved.

you only have to know:
The sum of the sides of a quadrilateral is equal to 360º.

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3 years ago