MATHEMATICS MIDDLE SCHOOL

Is 1-6 correct please help I will give thanks or brainliest
Is 1-6 correct please help I will give thanks or - 1

Answers

Answer 1
Answer: Good job !! There all correct !
Answer 2
Answer: Yes don't forget if you need to simplify do so .

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a sample of 412 adults showed that 293 of them are connected the the internet from home. Construct and interpret a 90% confidence interval for the proportion of all adults that have internet access.

Answers

The 90% confidence interval will be "(0.674, 0.748)".

Given:

Sample no. of events,

  • x = 293

Sample size,

  • n = 412

Now,

The sample proportion will be:

→ \hat{p} = (x)/(n)

     = (293)/(412)

     = 0.711

The significance level will be:

  • \alpha = 0.10

Form the z-table,

The critical value, z* = 1.645

Now,

The standard error will be:

= \sqrt{(\hat p(1- \hat p))/(n) }

= 0.0223

and,

The margin of error,

→ E = z* \sqrt{(\hat p(1- \hat p))/(n) }

      = 1.645* 0.0223

      = 0.0367

Now,

The lower limit will be:

= \hat p -E

= 0.6744

The upper limit will be:

= \hat p +E

= 0.7479

hence,

The CI is "(0.6744, 0.748)". Thus the response above is right.

Learn more about confidence interval here:

brainly.com/question/23611661

Answer:

CI = (0.674, 0.748)

Step-by-step explanation:

The confidence interval of a proportion is:

CI = p ± SE × CV,

where p is the proportion, SE is the standard error, and CV is the critical value (either a t-score or a z-score).

We already know the proportion:

p = 293/412

p = 0.711

But we need to find the standard error and the critical value.

The standard error is:

SE = √(p (1 − p) / n)

SE = √(0.711 × (1 − 0.711) / 412)

SE = 0.0223

To find the critical value, we must first find the alpha level and the degrees of freedom.

The alpha level for a 90% confidence interval is:

α = (1 − 0.90) / 2 = 0.05

The degrees of freedom is one less than the sample size:

df = 412 − 1 = 411

Since df > 30, we can approximate this with a normal distribution.

If we look up the alpha level in a z score table or with a calculator, we find the z-score is 1.645.  That's our critical value.  CV = 1.645.

Now we can find the confidence interval:

CI = 0.711 ± 0.0223 * 1.645

CI = 0.711 ± 0.0367

CI = (0.674, 0.748)

So we are 90% confident that the proportion of adults connected to the internet from home is between 0.674 and 0.748.

Please help and explain how

Answers

Answer:

the answer is 4 3/4 i think

Step-by-step explanation:

Hey there!

The correct answer is 4 3/4 inches

The lines on the ruler (in between each inch) represent the fractions of the inch. The first line would be 1/4 the second line is 2/4 or 1/2 and the third line is 3/4

Hope this helps you!

God bless ❤️

Brainliest would be appreciated

xXxGolferGirlxXx

Sixty five percent of 8th grade class is selling magazines for the class fundraiser. If 112 students are selling magazines how many students are in the 8th grade

Answers

Answer:seven hundred thirty two

Trapezoid JKLM is shown below.What is the length, in centimeters, of KL ?
A 12 cm
B 10 cm
C 9.cm
D 6 cm

Answers

B is the answer because you have to math it

Students were surveyed about their wither break plans.Of the people that stated they were going skiing, 25% did not actually go.How many students actually went skiing?

Answers

Answer:

The number of students who actually went for the skiing is 0.75 times the total number of students .

Step-by-step explanation:

Given as :

Students were surveyed about their wither break plans

The percentage of students who did not go for skiing = 25 %

So, The percentage of students who did not go for skiing =100 % - 25 % = 75%

Let The total number of students = x

So, The number of students actually went for the skiing = 75% of the total number of students

I.e The number of students actually went for the skiing = (75)/(100)× x

Or, The number of students actually went for the skiing = 0.75× x

∴ The number of students actually went for the skiing = 0.75 x

Hence The number of students who actually went for the skiing is 0.75 times the total number of students . Answer

Solve the equation x÷2+6÷x=4
​

Answers

Answer:x=2 x=6

Step-by-step explanation:
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