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qaws [65]
3 years ago
8

What is the slope, m, and the y-intercept of the line that is graphed below?

Mathematics
2 answers:
marusya05 [52]3 years ago
4 0

This looks confusing. Can you try reposting this to make it look clear?

alina1380 [7]3 years ago
4 0

Answer:

I think its -5

Step-by-step explanation:

cause

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A researcher was interested in comparing the resting heart rate of people who exercise regularly and people who do not exercise
alekssr [168]

Answer:

t=\frac{(73.5-69.3)-0}{\sqrt{\frac{10.2^2}{16}+\frac{8.7^2}{12}}}}=1.173  

Using the critical value method we need to find a critical value in the t distribution who accumulates 0.025 of the area on the right and we got:

t_{cric}= 2.06

So then since our calculated value is lower then the critical value we fail to reject the null hypothesis and we can't conclude that the true mean resting pulse rate of people who do not exercise regularly is larger than the mean resting pulse rate of people who exercise regularly.

Step-by-step explanation:

Information given

\bar X_{1}=73.5 represent the mean for sample of people who do not exercise

\bar X_{2}=69.3 represent the mean for sample of people who do exercise

s_{1}=10.2 represent the sample standard deviation for 1  

s_{2}=8.7 represent the sample standard deviation for 2  

n_{1}=16 sample size for the group 1

n_{2}=12 sample size for the group 2

\alpha=0.01 Significance level

t would represent the statistic

System of hypothesis

We want to verify if the mean resting pulse rate of people who do not exercise regularly is larger than the mean resting pulse rate of people who exercise regularly, the system of hypothesis would be:  

Null hypothesis:\mu_{1}-\mu_{2} \leq 0  

Alternative hypothesis:\mu_{1} - \mu_{2}> 0  

The statistic for this case would be given by:

t=\frac{(\bar X_{1}-\bar X_{2})-\Delta}{\sqrt{\frac{s^2_{1}}{n_{1}}+\frac{s^2_{2}}{n_{2}}}} (1)  

The degrees of freedom are given by:

df=n_1 +n_2 -2=16+12-2=26  

Replacing the info given we got:

t=\frac{(73.5-69.3)-0}{\sqrt{\frac{10.2^2}{16}+\frac{8.7^2}{12}}}}=1.173  

Using the critical value method we need to find a critical value in the t distribution who accumulates 0.025 of the area on the right and we got:

t_{cric}= 2.06

So then since our calculated value is lower then the critical value we fail to reject the null hypothesis and we can't conclude that the true mean resting pulse rate of people who do not exercise regularly is larger than the mean resting pulse rate of people who exercise regularly.

6 0
3 years ago
If Breanna drives a constant speed for 3 hours and travels 180 miles, what is her speed a mile per hour
Georgia [21]

Answer:

60 mph

Step-by-step explanation:

You divide 180 by 3 to get 60 mph

3 0
3 years ago
I ONLY need help with the tables ONLY! I’LL GIVE BRAINLIEST FOR THE RIGHT ANSWER?! I please include what you did for both tables
neonofarm [45]

Answer:

The first table.

Step-by-step explanation:

Every single time, the x is being multiplied by 3 to get the y, and that means its proportional. Also, the second one is for sure NOT proportional

7 0
3 years ago
Which two of the following are benefits of consumer programs?
Dennis_Churaev [7]

Answer:

The correct answer is 1) They help prosecute companies that sell unsafe products to consumers. And 4) They help consumers identify the best product reviews from various sources.

Explanation:

Consumer programs are all those that were created to provide the customer with the correct information about the products and their quality.

Nowadays, with the competition between the companies that present the same product, the client can feel confused about what product to consume. Still, through the consumer programs, the person can choose the best product depending on the program review, but in this way, You will be sure to select the right product based on your needs.

<em>I hope this information can help you.</em>

7 0
3 years ago
Read 2 more answers
Use a net to find the surface area of the cylinder use 3.14 for pi
telo118 [61]

Answer:

3.14

Step-by-step explanation:

7 0
3 years ago
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