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saveliy_v [14]
3 years ago
7

A large-sample 95 percent confidence interval for the proportion of credit card customers that have reported fraudulent charges

on their account is (0.028, 0.086). What is the point estimate for the proportion of all credit card customers that have reported fraudulent charges on their account? (A) 0.029 (B) 0.057 (C) 0.058 (D) 0.114 (E) 0.196
Mathematics
1 answer:
Elden [556K]3 years ago
8 0

Answer:

B.

Step-by-step explanation:

Point estimate is always at the center of the interval.

You can find it by averaging the endpoints:

p(hat) = (0.028 + 0.086)/2 = 0.057

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Solve proportion, if necessary round to nearest hundredth.
polet [3.4K]
The answer is b=-3 .

5 0
3 years ago
Read 2 more answers
Mark earned a 64 on his last science quiz. If Mark’s z-score was -2.8 and the standard deviation was 10, find the mean grade on
docker41 [41]

Answer:

he score is 2.15 standard deviations above the mean.

Step-by-step explanation:

8 0
3 years ago
Help and show explanation please
Dennis_Churaev [7]
The picture can be divided into 2 same triangles and one rectangular.

The triangle areas is {1/2 *base * height}*2 (because 2 same triangles)

and you need to sum rectangular area (width * base).
The result will be area of 2 triangle +area of rectangular.
=2(1/2*base of triangle* height)+ (base of rectangular * height)
= (base of triangle* height)+(base of rectangular * height)
=(base of triangle +base of rectangular)*height

b1 is top length
b2 is bottom length, and so

Base of triangle =(b1-b2/2)
Base of rectangular =b2
Height =h
Thus A ={(b1-b2/2)+b2 }*h
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8 0
2 years ago
Pls help I really need it
joja [24]
The answer is option 2
4 0
3 years ago
Read 2 more answers
Al final de la carrera de una famosa maratón, tres amigos, Hermes, Benito y
Fantom [35]

Answer:

Benito llega en segundo lugar.

Eladio llega en sexto lugar

Hermes llega en noveno lugar.

Step-by-step explanation:

Tenemos 3 amigos:

Benito

Hermes

Eladio

Hay 3 posiciones:

segundo

sexto

noveno.

Sabemos que:

Benito llegó antes que Hermes.

Cuando Eladio estaba llegando a la meta, solo Benito estaba descansando.

Es decir, cuando Eladio llego a la meta, Hermes aún no había llegado.

Eladio llegó a la meta antes que Hermes, pero después que Benito.

Entonces el primero en llegar es Benito, el segundo es Eladio y el tercero será Hermes.

Con la data inicial podemos decir que:

Benito llega en segundo lugar.

Eladio llega en sexto lugar

Hermes llega en noveno lugar.

3 0
3 years ago
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