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Semmy [17]
3 years ago
7

Part of a hundredths grid is shown.

Mathematics
1 answer:
olga_2 [115]3 years ago
4 0

Answer:

a =  6/5

b = 0.111 . . .

c =  166 2/3%

Step-by-step explanation:

just did it

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Please Help! I need an explanation on how to solve this, I am really confused.
ch4aika [34]

4x-3y=-9

The first step is to isolate your y value.

Subtract 4x from both sides to get

-3y=-4x-9

Then, divide your whole equation by -3. This gives you y=4/3+3

To graph, plot (0, 3), or three on your y-axis to get your y-intercept.

For your slope, use the rise/run (go up 4, across 3)

You should have a positive slope.

7 0
3 years ago
In a clinical trial of 268 subjects treated with a​ drug, 11​% of the subjects reported dizziness. The margin of error is plus o
Mariulka [41]

Answer:

\hat p =0.11 represent the proportion estimated of subjects reported with dizziness

n = 268 represent the random sample selected

\hat q = 1-\hat p = 1-0.11= 0.89 represent the proportion of subjects No reported with dizziness

E= 0.04 = 4% represent the margin of error for the confidence interval

\alpha= 1-0.90 =0.1 and this value represent the significance level of the test or the probability of error type I

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

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 is given by:

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

Lower= 0.11-0.04 = 0.07

Upper= 0.11+0.04 = 0.15

And for this case we have the following info:

\hat p =0.11 represent the proportion estimated of subjects reported with dizziness

n = 268 represent the random sample selected

\hat q = 1-\hat p = 1-0.11= 0.89 represent the proportion of subjects No reported with dizziness

E= 0.04 = 4% represent the margin of error for the confidence interval

\alpha= 1-0.90 =0.1 and this value represent the significance level of the test or the probability of error type I

4 0
3 years ago
Glen hiked 14 miles in 4 hours. What was his average rate of speed?
Daniel [21]
3.5 miles per hour :) hopefully this helps!
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Air Force One can travel 630 miles per hour. Let x be the number of hours traveled. The function that gives the distance y in mi
4vir4ik [10]
11340 = 630 × 18 miles traveled
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What is the mean of this data?<br><br> 12, 18, 11, 25, 38, 22
yanalaym [24]
Your answer is 21 for this one.
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3 years ago
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