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3 years ago

HELP ME (also simplifying)

Mathematics

2 answers:

ycow [4]3 years ago

6 0

1) 47/7
2) 47 to 7
3) 47:7

Svetlanka [38]3 years ago

5 0

Answer:

i cant see it

Step-by-step explanation:

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Please let me know if this is right

Harlamova29_29 [7]

The median is wrong because the median is the middle number

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3 years ago

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I have 4 questions

Helga [31]

The first one is C. 68. The second one is B. 7. The third one is x = 21. The fourth one is CD = 10

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3 years ago

48% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually

oksian1 [2.3K]

Answer:

There is no sufficient evidence to support the executive claim

Step-by-step explanation:

From the question we are told that

The population proportion is $p = 0.48$

The sample proportion is $\r p = 0.45$

The sample size is $n = 300$

The level of significance is $\alpha = 0.02$

The null hypothesis is $H_o : p= 0.48$

The alternative hypothesis is $H_a : p \ne 0.48$

Generally the test statistics is mathematically evaluated as

$t = \frac{\r p - p }{ \sqrt{ \frac{p(1 - p )}{n} } }$

=> $t = \frac{0.45 - 0.48 }{ \sqrt{ \frac{0.48 (1 - 0.48 )}{300} } }$

=> $t = -1.04$

The p-value is mathematically represented as

$p-value = 2P(z > |-1.04|)$

Form the z-table

$P(z > |-1.04|) = 0.15$

=> $p-value = 2 * 0.15$

=> $p-value = 0.3$

Given that $p-value > \alpha$ we fail to reject the null hypothesis

Hence we can conclude that there is no sufficient evidence to support the executive claim

5 0

3 years ago

Which of the following best describes the graph shown below?

xeze [42]

Answer: the answer is C

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

5+2(w-6) how do i rewrite as addition and solve?

Firdavs [7]

Answer:

$2w - 7$

Step-by-step explanation:

1) Expand by distributing terms.

$5 + 2w - 12$

2) Collect like terms.

$2w + (5 - 12)$

3) Simplify.

$2w - 7$

Therefor, the answer is 2w - 7.

7 0

3 years ago