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3 years ago

Question from my math test.

Mathematics

2 answers:

alexira [117]3 years ago

8 0

hey, wait a second... I saw you earlier, are you just putting all the questions on your math test here so you dont have to any of the work?

that's pretty smart.

strojnjashka [21]3 years ago

3 0

You keep showing up haha

11 students

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A linear function has a slope of 7/3 and crosses the y-axis at 10. What is the equation of the line?

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Y=Mx+b (m is slope, b is y-intercept)

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Tara and Veronica are in charge of making a banner for the volleyball game this Saturday. How much poster paper will they need f

fenix001 [56]

Answer:

21 7/8 square feet

Step-by-step explanation:

To solve the above Question, we have to used the formula of a parallelogram

The formula is given as:

Base × Height

Base = 6 1/4 feet

Height = 3 1/2 feet

Area = 6 1/4 × 3 1/2

Area = 25/4 × 7/2

Area = 175/8

Area = 21 7/8 ft²

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3 years ago

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Answer:

A.) The first graph

Step-by-step explanation:

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3 years ago

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Answer:

Number 16 is C and number 17 is D

Step-by-step explanation:

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3 years ago

You are conducting a study to see if the accuracy rate for fingerprint identification is significantly different from 0.4. You u

Ludmilka [50]

Answer:

Calculated Z -value = 2 < 2.326 at 0.02 level of significance

Null hypothesis is accepted

The accuracy rate for fingerprint identification is not significantly different from 0.4.

b)

P-value of this sample = 0.0455

Step-by-step explanation:

Step(i):-

Given sample size 'n' = 298

Sample proportion

$p^{-} = \frac{x}{n} = \frac{136}{298} = 0.456$

Population proportion

p = 0.4

Null hypothesis :-

The accuracy rate for fingerprint identification is not significantly different from 0.4

H₀: p=0.4

Alternative Hypothesis :-

The accuracy rate for fingerprint identification is significantly different from 0.4

H₁: p≠0.4

Step(ii):-

Test statistic

$Z = \frac{p^{-} -P}{\sqrt{\frac{P Q}{n} } }$

$Z = \frac{0.456-0.4}{\sqrt{\frac{0.4 X 0.6}{298} } }$

Z = 2

Given level of significance α=0.02

critical value Z = 2.326

Calculated Z -value = 2 < 2.326 at 0.02 level of significance

Null hypothesis is accepted

The accuracy rate for fingerprint identification is not significantly different from 0.4.

P- value

P( Z>2) = 1- P( Z <2)

= 1 - ( 0.5 - A(2)

= 0.5 - 0.4772

= 0.0228

Given two tailed test = 2 ×P( Z >2)

= 2 × 0.0228

= 0.0456

The p-value is 0.0456

3 0

4 years ago