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3 years ago

6

what is 372x19+89 WANT FREE POINTS? COME HERE SHHHH! I HAVE TO ASK A QUESTION SO IT DOESNT GET DELETED! LET ME KNOW IF YOU WANT

BRIANLIEST!!

2 answers:

Stells [14]3 years ago

7 0

Answer:

wow

Step-by-step explanation:

soldi70 [24.7K]3 years ago

3 0

Answer:

7157

Step-by-step explanation:

Answer is 7157

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It is advertised that the average braking distance for a small car traveling at 65 miles per hour equals 120 feet. A transportat

Mrrafil [7]

Answer:

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean is equal to 120 or not, the system of hypothesis would be:

Null hypothesis: $\mu = 120$

Alternative hypothesis: $\mu \neq 120$

Part 2

Calculate the statistic

We can replace in formula (1) the info given like this:

$z=\frac{114-120}{\frac{22}{\sqrt{36}}}=-1.636$

P-value

Since is a two sided test the p value would be:

$p_v =2*P(z$

Step-by-step explanation:

Data given and notation

$\bar X=114$ represent the sample mean

$\sigma=22$ represent the population standard deviation

$n=36$ sample size

$\mu_o =120$ represent the value that we want to test

$\alpha$ represent the significance level for the hypothesis test.

t would represent the statistic (variable of interest)

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

Part 1

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean is equal to 120 or not, the system of hypothesis would be:

Null hypothesis: $\mu = 120$

Alternative hypothesis: $\mu \neq 120$

If we analyze the size for the sample is > 30 and we know the population deviation so is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

Part 2

Calculate the statistic

We can replace in formula (1) the info given like this:

$z=\frac{114-120}{\frac{22}{\sqrt{36}}}=-1.636$

P-value

Since is a two sided test the p value would be:

$p_v =2*P(z$

8 0

3 years ago

romanna [79]

Maybe 4.80

Step-by-step explanation:

3 0

3 years ago

Hi I really need help with my math questions because I am on the edge of failing math class please help me out thank you!

Troyanec [42]

survey every employee who works in the store

Step-by-step explanation:

7 0

3 years ago

what is the slope of the line through (1,0)(1,0)left parenthesis, 1, comma, 0, right parenthesis and (3,8)(3,8)

77julia77 [94]

The slope of the line passing through (1 , 0) and (3 , 8) is 4.

Slope, commonly represented by the letter m, is a value that describes the steepness and direction of a line. The slope of a line is also called its gradient or rate of change.

It is the vertical change in y divided by the horizontal change in x, sometimes called rise over run. The slope formula uses two points, $(x_{1}, y_{1} )$ and $(x_{2}, y_{2} )$ , to calculate the change in y over the change in x.

$m=\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$ where

$x_{1} = 1$

$y_{1} = 0$

$x_{2} = 3$

$y_{2} = 8$

Substituting the values,

$m=\frac{y_{2}-y_{1} }{x_{2}-x_{1} } =\frac{8-0}{3-1} =\frac{8}{2}=4$

Hence, he slope of the line passing through (1 , 0) and (3 , 8) is 4.

For more example on slope of line, visit brainly.com/question/3493733.

#SPJ4

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2 years ago

Fluency two step equations

marishachu [46]

Answer:

=> 6x-1=5

=>6x=6

=>x=1

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3 years ago