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3 years ago

At the salad bar, the grocery store charges $5.99 for each half pound you buy. Which variable is dependent?

Mathematics

1 answer:

son4ous [18]3 years ago

7 0

Answer:

See below.

Step-by-step explanation:

cost = function of the number of half pounds you buy

Let n = number of half pounds you buy.

Let c = cost.

The cost function is

c = 5.99n

n is the independent variable. The number of half pounds you buy is any number you choose. Once you have a fixed number for n, then c depends on that number.

c is the dependent variable.

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3 years ago

Three boys, Adam, Kyle, and Ty, and two girls, Anne and Kate, have volunteered to help plan the school dance. One student will b

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2 years ago

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Jonah's house and his grandparents' house are 8,046.72 meters apart. What is this distance in miles?

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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

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3 years ago