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3 years ago

What is the measure of B?

Mathematics

2 answers:

GrogVix [38]3 years ago

7 0

<h2>plz mark me as brainliest</h2>

Nikitich [7]3 years ago

6 0

Answer- 55
A triangle has 180 degrees
One side is 35 and we have the 90 degree angle
All we have to do is 35+90 then subtract that from 180

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A publisher of a newsmagazine has found through past experience that 60% of subscribers renew their subscriptions. In a random s

larisa86 [58]

Answer:

$z=\frac{0.57 -0.6}{\sqrt{\frac{0.6(1-0.6)}{100}}}=-0.612$

$p_v =2*P(z$

Step-by-step explanation:

Data given and notation

n=100 represent the random sample taken

X=57 represent the subscribers indicated that they planned to renew their subscriptions

$\hat p=\frac{57}{100}=0.57$ estimated proportion of subscribers indicated that they planned to renew their subscriptions

$p_o=0.6$ is the value that we want to test

$\alpha$ represent the significance level

z would represent the statistic (variable of interest)

$p_v$ represent the p value (variable of interest)

Concepts and formulas to use

We need to conduct a hypothesis in order to test the claim that the current rate of renewals differs from the rate previously experienced, so the system of hypothesis are:

Null hypothesis: $p=0.6$

Alternative hypothesis: $p \neq 0.6$

When we conduct a proportion test we need to use the z statistic, and the is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

The One-Sample Proportion Test is used to assess whether a population proportion $\hat p$ is significantly different from a hypothesized value $p_o$ .

Calculate the statistic

Since we have all the info requires we can replace in formula (1) like this:

$z=\frac{0.57 -0.6}{\sqrt{\frac{0.6(1-0.6)}{100}}}=-0.612$

Statistical decision

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.

Since is a bilateral test the p value would be:

$p_v =2*P(z$

5 0

3 years ago

Suppose x is the height of a building and y is the number of rooms in the building. Which quadrant does the point (x,y) lie on?

Anni [7]

Answer:

First quadrant.

Step-by-step explanation:

Quadrants:

In the first quadrant, both x and y are positive, that is, x > 0, y > 0.

In the second quadrant, x is negative while y is positive, that is, x < 0, y > 0.

In the third quadrant, both x and y are negative, that is, x < 0, y < 0

In the fourth quadrant, x is positive while y is negative, that is, x > 0, y < 0

In this question:

Both the height of a building, which is x, and the number of rooms in the building, which is x, have to be positive numbers, and thus, the point (x,y) lies on the first quadrant.

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3 years ago

Mateo makes 6 loaves of banana bread.He sells 2/3 of the loaves at a bake sale.Which expression represents how many loaves mateo

Ksivusya [100]

2/3*6=4
hope this helps
-Turtles12345

5 0

3 years ago

Read 2 more answers

Please need this answer

Natalka [10]

Relative minimum would be -15 and -9, relative maximum is -6

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