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butalik [34]
3 years ago
13

To decrease an amount by 15.5% what single multiplier would you use

Mathematics
2 answers:
Mashutka [201]3 years ago
8 0

Answer:

100 percent - 15.5 percent= -0.13


Step-by-step explanation:


anzhelika [568]3 years ago
3 0
100% - 15.5% is 84.5% so the multiplier would be .845
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Help????<br> Correct answer gets Brainliest.
Solnce55 [7]

Answer:

x\geq3

Step-by-step explanation:

You add 5 to both sides. Then divide it by 4 to get your answer.

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3 years ago
PLEASE HELP ASAP!! VERY IMPORTANT!!!
erica [24]
It is c I think I'm not positive but Ive done this one
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3 years ago
A binomial distribution has p = 0.05 and n = 50. what is the mean of this distribution?
Kruka [31]

2.5 is the mean of this distribution.

What is the distribution's mean?

  • The expected value, commonly known as the mean of a statistical distribution with a continuous random variable, is calculated by integrating the product of the variable's probability as described by the distribution.
  • The lowercase Greek letter mu () stands for the expected value. A probability of 50% equals zero standard deviations, and the mean is in the middle of the normal distribution.

Given: p = 0.05 and n= 50

Mean of the binomial distribution = n×p = 50 × 0.05 = 2.5

Therefore, option a is the correct answer. Other options are incorrect because these are irrelevant.

Learn more about  binomial distribution

brainly.com/question/14565246

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7 0
1 year ago
3. Using the sample size of 800 and the proportion 0.47, calculate the margin of error associated with the estimate of the propo
salantis [7]

Answer:

ME=1.96\sqrt{\frac{0.47 (1-0.47)}{800}}=0.0346  

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

The population proportion have the following distribution

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

Solution to the problem

We assume for this case a confidence level of 95%. In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025. And the critical value would be given by:

z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96

The confidence interval for the mean is given by the following formula:  

\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

And if we replace the values obtained we got this:

ME=1.96\sqrt{\frac{0.47 (1-0.47)}{800}}=0.0346  

6 0
3 years ago
The equation h(t) = -16t^2? + 32t + 128 models the path of a ball thrown in the air from the top of a building. After how many s
Lelu [443]

Answer:

1 second

Step-by-step explanation:

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3 years ago
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