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Veronika [31]
2 years ago
6

Florence has $400 in a savings account. The interest rate is 5% per year and is not

Mathematics
1 answer:
Sati [7]2 years ago
3 0

Answer:

$20

Step-by-step explanation:

I = 400(.05)(1)

I = 20

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There are 5 cards with a picture of a rose and 1 card with a picture of a daisy.
Lostsunrise [7]

Answer:

the correct answer is 1/5

Step-by-step explanation:

8 0
3 years ago
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12 picks in all . 1 out of 4 picks are orange . the rest are green . How many picks are orange ?
makvit [3.9K]
For every 4 picks there is 1 orange pick, so 12/4 should be fine
7 0
3 years ago
In a clinical test with 2161 subjects, 1214 showed improvement from the treatment. Find the margin of error for the 95% confiden
Vlad [161]

Answer:

The margin of error for the 95% confidence interval used to estimate the population proportion is of 0.0209.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the z-score that has a p-value of 1 - \frac{\alpha}{2}.

The margin of error is of:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

In a clinical test with 2161 subjects, 1214 showed improvement from the treatment.

This means that n = 2161, \pi = \frac{1214}{2161} = 0.5618

95% confidence level

So \alpha = 0.05, z is the value of Z that has a p-value of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

Margin of error:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

M = 1.96\sqrt{\frac{0.5618*0.4382}{2161}}

M = 0.0209

The margin of error for the 95% confidence interval used to estimate the population proportion is of 0.0209.

4 0
3 years ago
Brandon buys a radio for $43.75 in a state where the sales tax is 7%.
Nastasia [14]

Answer:

Tax: $3.06

Step-by-step explanation:

7% of 43.75 = 0.07 × 43.75 = 3.0625

43.75 increase 7% =

43.75 × (1 + 7%) = 43.75 × (1 + 0.07) = 46.8125

Radio: $43.75

Tax: $3.06

Total: $46.81

4 0
2 years ago
!!!!!!Plss Help Me!!!!!!!
dimulka [17.4K]

Write the problem as an equation:

5n <65

Solve for n by dividing both sides by 5:

n <13

Because the inequality does not contain an equal sign, n (13) is not included in the answer so there would be an open circle on the number 13

The correct answer would be A.

3 0
2 years ago
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