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Law Incorporation [45]

3 years ago

10

It costs $100 to rent the bowling alley, plus $4 per person. The cost for any number (n) of people can be found using the expres

sion 100 + 4n. The cost for 10 people equals what?

1 answer:

ella [17]3 years ago

3 0

Answer:

140

Step-by-step explanation:

Since n represents the number of people, and they are asking the cost for 10 people, you can do 4(10) + 100 which is 140

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Step-by-step explanation:

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3 years ago

ABCD×9=DCBA<br>(what is the value of A, B, C and D)

Anettt [7]

Answer:

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3 years ago

drug sniffing dogs must be 95% accurate in their responses because their handlers don't want them to miss durgs and also don't w

GenaCL600 [577]

Answer:

95% Confidence interval: (0.8449,0.9951)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 50

Number of times the dog is right, x = 46

$\hat{p} = \dfrac{x}{n} = \dfrac{46}{50} = 0.92$

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:

$0.92 \pm 1.96(\sqrt{\dfrac{0.92(1-0.92)}{50}})\\\\ = 0.92\pm 0.0751\\\\=(0.8449,0.9951)$

(0.8449,0.9951) is the required 95% confidence interval for the proportion of times the dog will be correct.

7 0

2 years ago