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3 years ago

PLEASE HELP!!!! WORTH 20 points it’s all I have show all of your work!!!!!!!

Mathematics

1 answer:

stiv31 [10]3 years ago

8 0

Answer:

Part A: [0,2], Part B: [2, 4], Part C: [8,10], Part D: 0 ft

Step-by-step explanation:

Part A: The time between 0 seconds to 2 seconds is the time when it's increasing. There is no other time like that.

Part B: The graph shows a straight line so therefore it is staying the same.

Part C: The graph shows a sharp decline.

Part D: Starting from the 10th second, the balloon already hit to ground so it would only make sense for it to stay there...

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HOWDY YALL 333 111 222 444 POOP

Savatey [412]

Answer:

333 111 poop to you to

Step-by-step explanation:

5 0

3 years ago

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Suppose that 70% of college women have been on a diet within the past 12 months. A sample survey interviews an SRS of 267 colleg

Fofino [41]

Answer:

The probability that 75% or more of the women in the sample have been on a diet is 0.037.

Step-by-step explanation:

Let X = number of college women on a diet.

The probability of a woman being on diet is, P (X) = p = 0.70.

The sample of women selected is, n = 267.

The random variable thus follows a Binomial distribution with parameters n = 267 and p = 0.70.

As the sample size is large (n > 30), according to the Central limit theorem the sampling distribution of sample proportions ( $\hat p$ ) follows a Normal distribution.

The mean of this distribution is:

$\mu_{\hat p} = p = 0.70$

The standard deviation of this distribution is: $\sigma_{\hat p}=\sqrt{\frac{p(1-p}{n}} =\sqrt{\frac{0.70(1-0.70}{267}}=0.028$

Compute the probability that 75% or more of the women in the sample have been on a diet as follows:

$P(\hat p \geq 0.75)=P(\frac{\hat p-\mu_{\hat p}}{\sigma_{\hat p}} \geq \frac{0.75-0.70}{0.028}) =P(Z\geq0.179)=1-P(Z$

**Use the z-table for the probability.

$P(\hat p \geq 0.75)=1-P(Z$

Thus, the probability that 75% or more of the women in the sample have been on a diet is 0.037.

7 0

3 years ago

Pls help and explain, will give brainliest! -5+3 + (-1/6)+ 5/6 in fractions form

Kamila [148]

Answer:

Step-by-step explanation:

-5+3 + (-1/6)+ 5/6

-2 - 1/6 + 5/6

-2 + 4/6 (do this boring math)

5 0

3 years ago

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Help please i need to know this so i get a good grade.

ZanzabumX [31]

Answer:

The answer is -11/12

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3 years ago

g True or False: Regression analysis is used for prediction, while correlation analysis is used to measure the strength of the a

larisa [96]

Answer:

The given statement is true.

Step-by-step explanation:

Regression Analysis:

Regression analysis is a technique that help us to find or define a relationship between a dependent and an independent variable.
It helps us to predict the dependent variables with the help of independent variables.
Various techniques are used for the prediction of independent variable.
It is a type of predictive statistical technique and helps us to find whether there is a significant relationship between the dependent and the independent variable.

Correlation analysis:

Correlation is a technique that help us to find or define a relationship between two variables.
It is a measure of linear relationship between two quantities.

It is not necessary that the that out of the two variable one needs to be dependent and the other to be independent.
Correlation can be positive, negative or zero correlation.

Thus, the given statement is true.

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3 years ago