3 years ago

Please help question in picture!

Mathematics

1 answer:

eduard3 years ago

6 0

Answer:

Step-by-step explanation:

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8x+y=300

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8x+y=300

y= 300-8x
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y = 300-300
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wheb y =0 that means that the height is 0

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Which statement is true regarding the functions on the graph

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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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(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

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

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

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

$p=0.24$

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

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

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

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$0.24-0.155832$

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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