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3 years ago

13

Suppose that a population parameter is 0.2, and many samples are taken from the population. As the size of each sample increases

, the mean of the sample proportions would approach which of the following values?
A. 0.1
B. 0.3
C. 0.4
D. 0.2

2 answers:

nasty-shy [4]3 years ago

6 0

Aaaaaaaasaaaaaaaaaaaaaaaaaaaaaaaaaaa

egoroff_w [7]3 years ago

5 0

Answer:

D 0.2

Step-by-step explanation:

YES THIS IS RIGHT

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A bank sampled its customers to determine the proportion of customers who use their debit card at least once each month. A sampl

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Answer:

(0.084,0.396)

Step-by-step explanation:

The 99% confidence interval for the proportion of customers who use debit card monthly can be constructed as

$p-z_{\frac{\alpha }{2}} \sqrt{\frac{pq}{n} }$

$p=\frac{x}{n}$

$p=\frac{12}{50}$

$p=0.24$

$q=1-p=1-0.24=0.76$

$\frac{\alpha }{2} =\frac{\0.01 }{2}=0.005$

$p-z_{\frac{\alpha }{2}} \sqrt{\frac{pq}{n} }$

$0.24-z_{0.005} \sqrt{\frac{0.24*0.76}{50} }$

$0.24-2.58(0.0604)$

$0.24-0.155832$

By rounding to three decimal places we get,

$0.084$

The 99% confidence interval for the proportion of customers who use debit card monthly is (0.084,0.396).

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3 years ago

A car weighs 4,000 pounds wich comparison is true

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Answer:

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Step-by-step explanation:

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