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kari74 [83]
3 years ago
7

I need help plz only one question

Mathematics
2 answers:
alisha [4.7K]3 years ago
8 0

Answer:

i cant see what your trying to get help on

Step-by-step explanation:

Sauron [17]3 years ago
7 0
150 is the answer to this question hope I help
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Please solve the answer above correctly showing detailed working​
Sergeeva-Olga [200]
<h2>Intersection and Union of Sets</h2><h3>Answer:</h3>

A \cup B = \{ a, b, c, d, e \}

B \cap C = \{ d, e \}

A \cup C = \{ a, b, c, d, e, f \}

<h3>Step-by-step explanation:</h3>

Given:

A = \{ a, b, c, d \}

B = \{ b, d, e \}

C = \{ d, e, f \}

The Union (\cup) of sets A and B is just a set containing all the elements of sets A and B. However, elements that are present in both sets should not repeat in the Union of Sets as the elements of a set should distinct be from each other.

Part i:

A \cup B \\ \{ a, b, c, d \} \cup \{ b, d, e \} \\ \{ a, b, c, d, e \}

The Intersection (\cap) of sets A and B is just a set containing all the elements that are both present in sets A and B.

Part ii:

B \cap C \\ \{ b, d, e \} \cap \{ d, e, f \} \\ \{ d, e \}

Part iii:

A \cup C \\ \{ a, b, c, d, \} \cup \{d, e, f \} \\ \{ a, b, c, d, e, f \}

8 0
3 years ago
Corresponding Angles Flow Proof
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3 years ago
ray is purchasing a laptop that is on sale for 25% off. he knows the function that represents the sale price of his laptop is c(
Agata [3.3K]
F[c(p)] = 0.81p. I hope this helps :) Please give me a rate and thanks :P
6 0
3 years ago
Read 2 more answers
The function y= -3(x-2)^2 +6 shows the daily profit in hundreds of dolars of a hot dog stand where x is the price of a hot dog i
Misha Larkins [42]
Gotta graph this one
Zeros are $.586 and $3.414 and the profit is zero when these are the prices

Maximum profit when the dogs are 2 bucks
6 0
3 years ago
The null and alternative hypotheses are given. Determine whether the hypothesis test is​ left-tailed, right-tailed, or​ two-tail
olganol [36]

Answer:

Two tailed test

Parameter tested= population standard deviation

Step-by-step explanation:

1) Important concepts

The chi-square test if the standard deviation of a population is equal to a given value. We can conduct the test two-side or a one-side.

For the case of two-side we want to check if the population deviation is equal to some value or no. And for the case of one-side we want to check if the population devition is higher or lower than a given value.

The system of hypothesis are:

\sigma=\sigma_o Null hypothesis

\sigma \neq \sigma_o Alternative hypothesis

That's when we use the two sided version but we can have other's alternative hypothesis if we use one-side test:

\sigma < \sigma_o Alternative hypothesis

\sigma > \sigma_o  Alternative hypothesis

The test statistic to check the hypothesis is:

t=(N-1)(\frac{s}{\sigma_o})^2

For this special case the value of \sigma_o =99

Where N represent the sample size and s is the sample standard deviation. The ratio \frac{s}{\sigma_o} is important since allows to compare the ratio of the sample standard deviation to the specified value. If this ratio is different from 1, we will have evidence that we can reject the null hypothesis.

Using a significance level \alpha we can find the critical region for the possible alternative hypothesis:

t>\chi_{\alpha,N-1}^2 for the upper one tailed option

t for the lower one tailed option

t for the two tailed option

The N-1 represent the degrees of freedom for the chi square distribution.

2) Solving the question

Based on all the info from above we can conclude that:

Type of test= Two tailed test

Parameter tested=population Standard deviation

And they want to check if the population deviation differs from 99

7 0
3 years ago
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