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3 years ago

Need Help ASAP Will Mark Brainliest

Mathematics

1 answer:

Genrish500 [490]3 years ago

6 0

I believe the last one

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Assume a significance level of alpha = 0.05 and use the given information to complete parts (a) and (b) below. Original claim

laiz [17]

Answer:

The correct option is B

The correct option is D

Step-by-step explanation:

From the question we are told that

The level of significance is $\alpha = 0.05$

The p-value is $p = 0.2761$

Considering question b

Given that the $p< \alpha$ then the null hypothesis is rejected

Considering question b

Given that the original claim is The standard deviation of pulse rates of a certain group of adult males is more than 11 bpm

Then the null hypothesis is $H_o : \sigma = 11$

The reason why the null hypothesis is write like this above is because a null hypothesis expression can not contain only a > or a < but only allows = $\le , \ and \ \ge$

and the alternative hypothesis is $H_a : \sigma > 11$

Now given that the null hypothesis is rejected, it mean that there is sufficient evidence to support original claim

4 0

3 years ago

The diagram shows a right-angled triangle.

musickatia [10]

I need to see the diagram please

8 0

3 years ago

Calculate the quotient below and give your answer in scientific notation.<br> 2.64*10^-3\8.0*10^0

Zolol [24]

Answer:

The quotient of: $\frac{2.64\cdot 10^{-3}}{8.0\cdot 10^0}$ is: $\mathbf{3.3\times 10^{-4}}$

Step-by-step explanation:

We need to find quotient of: $\frac{2.64\cdot 10^{-3}}{8.0\cdot 10^0}$

We know that $10^0=1$

Now solving:

$\frac{2.64\cdot 10^{-3}}{8.0\cdot 10^0}\\=\frac{2.64\cdot 10^{-3}}{8.0}\\=\frac{0.00264}{8}\\=0.00033$

Writing it in scientific notation

$0.00033\\=3.3\times10^{-4}$

So, the quotient of: $\frac{2.64\cdot 10^{-3}}{8.0\cdot 10^0}$ is: $\mathbf{3.3\times 10^{-4}}$

3 0

3 years ago

Makovka662 [10]

Answer:

The inequality is;

34°F < t < 71°F

Step-by-step explanation:

Here, using t as the variable, we want to write an inequality

We want to write an inequality above 34 but below 71

The inequality will be;

34°F < t < 71°F

8 0

3 years ago

Find the area of triangle ABC. Give your answer to 1 decimal place. Sine rule.

laiz [17]

Answer:

Solution,

In ∆ ABC

< A + <B + < C = 180°

or, 72 + 59 + <C = 180°

or, 131 + <C = 180°

or, <C = 180 - 131

< C = 49

Area of ∆ABC = 1/2 ab sin C

= 1/2 * 12 * 7 * sin 49

= 42 * sin 49

= 31.7 ( approximately)

Hope this helps...

Good luck on your assignment...

4 0

3 years ago