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2 years ago

12

your middle school is having a carnival. Admission into the carnival is $8, and each game inside the carnival costs $0.50. How m

any games (g) can be played with $20

1 answer:

Licemer1 [7]2 years ago

6 0

You can play 24 games with 20 dollars

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The table below shows the average yearly balance in a savings account where interest is compounded annually. no money is deposit

djverab [1.8K]

A. Linear with a negative rate of change

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2 years ago

What graph represents an even function

o-na [289]

I don’t c any graphs?

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2 years ago

Write as a product of two polynomials.<br> (x-y)^2-a(y-x)

11Alexandr11 [23.1K]

Answer:

(x-y) (a+x-y)

Step-by-step explanation:

(y-x)=-(x-y)

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3 years ago

Construct the confidence interval for the population mean mu. c = 0.90, x = 16.9, s = 9.0, and n = 45. A 90% confidence inte

Georgia [21]

Answer:

The 90% confidence interval for population mean is $14.7 < \mu < 19.1$

Step-by-step explanation:

From the question we are told that

The sample mean is $\= x = 16.9$

The confidence level is $C = 0.90$

The sample size is $n = 45$

The standard deviation

Now given that the confidence level is 0.90 the level of significance is mathematically evaluated as

$\alpha = 1-0.90$

$\alpha = 0.10$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the standardized normal distribution table. The values is $Z_{\frac{\alpha }{2} } = 1.645$

The reason we are obtaining critical values for $\frac{\alpha }{2}$ instead of that of $\alpha$ is because $\alpha$ represents the area under the normal curve where the confidence level 1 - $\alpha$ (90%) did not cover which include both the left and right tail while $\frac{\alpha }{2}$ is just considering the area of one tail which is what we required calculate the margin of error

Generally the margin of error is mathematically evaluated as

$MOE = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }$

substituting values

$MOE = 1.645* \frac{ 9 }{\sqrt{45} }$

$MOE = 2.207$

The 90% confidence level interval is mathematically represented as

$\= x - MOE < \mu < \= x + MOE$

substituting values

$16.9 - 2.207 < \mu < 16.9 + 2.207$

$16.9 - 2.207 < \mu < 16.9 + 2.207$

$14.7 < \mu < 19.1$

3 0

3 years ago

A quart of heavy cream cost 2.99 how much would 2 1/2 gallon cost

patriot [66]

A gallon of that ice cream would be 10.99, so 2 1/2 would be 20.10.

3 0

2 years ago