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2 years ago

Say whether each of these numbers is a fraction, a decimal, or a whole number: ⅗, 18.2, 47!

Mathematics

1 answer:

denpristay [2]2 years ago

6 0

Answer:

Fraction, decimal, whole number

Step-by-step explanation:

if it has a line, it's a fraction. If it has a dot, it's a decimal. If it has none of the above, it's a whole number

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Each year, more than 2 million people in the United States become infected with bacteria that are resistant to antibiotics. In p

Olegator [25]

Answer:

Reject H₀. There is a significant difference in drug resistance between the two states.

Step-by-step explanation:

In this case we need to determine whether the data suggest a statistically significant difference between the proportions of drug-resistant cases in the two states.

The significance level of the test is, α = 0.02.

(1)

The hypothesis can be defined as follows:

H₀: There is no difference between the proportions of drug-resistant cases in the two states, i.e. $p_{1} - p_{2}= 0$ .

Hₐ: There is a statistically significant difference between the proportions of drug-resistant cases in the two states, i.e. $p_{1} - p_{2}\neq 0$ .

(2)

Compute the sample proportions and total proportion as follows:

$\hat p_{1}=\frac{12}{189}=0.063\\\\\hat p_{2}=\frac{8}{429}=0.019\\\\\hat p=\frac{12+8}{189+429}=0.032\\$

Compute the test statistic value as follows:

$Z=\frac{\hat p_{1}-\hat p_{2}}{\sqrt{\hat p(1-\hat p)\times [\frac{1}{n_{1}}+\frac{1}{n_{2}}]}}$

$=\frac{0.063-0.019}{\sqrt{0.032(1-0.032)\times [\frac{1}{189}+\frac{1}{429}]}}\\\\=2.86$

The test statistic value is 2.86.

(3)

The decision rule is:

The null hypothesis will be rejected if the p-value of the test is less than the significance level.

Compute the p-value as follows:

$p-value=2\cdot P(Z>2.86)=2\times 0.00212=0.00424$

p-value = 0.00424 < α = 0.02.

The null hypothesis will be rejected at 0.02 significance level.

Reject H₀. There is a significant difference in drug resistance between the two states.

7 0

3 years ago

A line passes through the points (4, 19) and (9, 24). Write A linear function in the form Y equals MX plus be for this line.

avanturin [10]

Answer:

y = x + 15

Step-by-step explanation:

okay so you're gonna use the y2-y1/x2-x1 formula to find the slope (m)

24 - 19/9 - 4 = 5/5 = 1

so that is your slope (m)

and now if you follow your slope then you should get your y-intercept (b)

4 - 1 = 3 19 - 1 = 18

(3, 18)

3 - 1 = 2 18 - 1 = 17

(2, 17)

2 - 1 = 1 17 - 1 = 16

(1, 16)

1 - 1 = 0 16 - 1 = 15

(0, 15)

so thats your y-intercept (b)

and the equation will look like:

y = mx + b y = x + 15 or y = 1x + 15 (but the 1 isn't necessary)

3 0

3 years ago

Thế nào là hai góc đối đỉnh

Harlamova29_29 [7]

nào là hai doin dhn

8 0

2 years ago

In countries that use the metric system of measurement, corn yields are sometimes expressed in quintals per hectare (q/ha) inste

Fittoniya [83]

Answer:

The answer is below

Step-by-step explanation:

Different countries have different metric system of measurement, but the metric system of measurement accepted all over the world is the international system of unit (SI unit)

1 quintal = 220.462 lbs and 1 bushel of corn = 56 lbs.

151 q/ha = (151 × 220.462) lbs/ha = 33289.762 lbs/ha

But 1 hectare = 2.471 acre, hence:

33289.762 lbs/ha = $\frac{33289.762\ lbs}{1\ ha*\frac{2.471\ acre}{1 \ ha} } =13472.182\ lbs/acre$

Since 1 bushel of corn = 56 lbs, hence:

$13472.182\ lbs/acre=\frac{13472.182\ lbs*\frac{1\ bushels}{56\ lbs} }{acre}=240.6\ bushels/acre$ = 240.6 bu/ac

For a Margin of Error: +/- 1 bu/ac, the bushels per acre = (239.6 bu/ac, 241.6 bu/ac)

5 0

3 years ago

please help, this is due today and i dont have much time, ill give brainliest for the first correct answer. thanks! :3

Dmitriy789 [7]

Answer:

The answer is C as for closed circled means equal to. It is less than. So it is lower than 5.

6 0

2 years ago

Read 2 more answers