3 years ago

I need help on c and e

Mathematics

1 answer:

Lorico [155]3 years ago

3 0

I agree those answers make more sense to be true ^^^^

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PLEASE HELP! A class has an average score of 75%. A test is taken with an average score of 60%. The test is graded on a curve so

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Answer:

1.032%

Step-by-step explanation:

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3 years ago

Jala put $600 in an interest bearing account with a annual compound interest rate of 5%. Jala determined that after seven years,

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14 years. Would be your answer.

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3 years ago

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A horseback rider travels 2 miles in 12 minutes. At this speed, how long does it take to travel 5 miles?

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Divide the time he traveled by the distance to find how fast he travels 1 mile, then multiply that by 5 miles:

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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.

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3 years ago

You deposit $4300 in an account that earns 2% per year simple interest. The equation that represents this situation is: A(n) = 4

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Answer: $4902

Step-by-step explanation:

Amount = P (1 + rt)

= 4300 (1 + .02 * 7)

= 4300 (1 + .14)

= 4300 (1.14)

= 4902

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3 years ago