All categories

2 years ago

A company sells a dried fruit mixture for $5 per pound. To make the mixture, banana chips that cost

Mathematics

1 answer:

ELEN [110]2 years ago

6 0

Answer:

2.5 pounds

Step-by-step explanation:

Let s represent the number of pounds of dried strawberries that should be added to the bananas. The total cost of the mixture will be ...

(2.50)(3) +(8.00)(s) = (5.00)(3 +s)

7.50 +8s = 15 +5s . . . . . . . eliminate parentheses

3s = 7.50 . . . . . . . . . subtract 7.50+5s

s = 2.50 . . . . . . divide by 3

2.5 pounds of dried strawberries should be added to make the mixture.

You might be interested in

The government of Preon (a small island nation) was voted in at the last election with 58% of the votes. That was 2 years ago, a

mel-nik [20]

Answer:

a) $z=\frac{0.684 -0.58}{\sqrt{\frac{0.58(1-0.58)}{114}}}=2.250$

b) $p_v =2*P(z>2.250)=0.0244$

If we compare the p value and the significance level given we see that $p_v$ we have enough evidence to reject the null hypothesis at 5% of significance.

Step-by-step explanation:

Data given and notation

n=114 represent the random sample taken

$\hat p=0.684$ estimated proportion of people that their approval rating might have changed

$p_o=0.58$ is the value that we want to test

$\alpha=0.05$ represent the significance level

Confidence=95% or 0.95

z would represent the statistic (variable of interest)

$p_v$ represent the p value (variable of interest)

Hypothesis

We need to conduct a hypothesis in order to test the claim that true proportion of people that their approval rating might have changed is 0.58 or no.:

Null hypothesis: $p=0.58$

Alternative hypothesis: $p \neq 0.58$

Part a

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Calculate the statistic

Since we have all the info requires we can replace in formula (1) like this:

$z=\frac{0.684 -0.58}{\sqrt{\frac{0.58(1-0.58)}{114}}}=2.250$

Part b: Statistical decision

The significance level provided $\alpha=0.05$ . The next step would be calculate the p value for this test.

Since is a bilateral test the p value would be:

$p_v =2*P(z>2.250)=0.0244$

If we compare the p value and the significance level given we see that $p_v$ we have enough evidence to reject the null hypothesis at 5% of significance.

7 0

3 years ago

Simplify -3(4w-3) using the distributive property

Anton [14]

Answer:

Step-by-step explanation:

hello :

-3(4w-3)= - 12w+9

5 0

3 years ago

A small bag has a penny, a nickel, a dime, and a quarter. A child chooses 2 coins from the bag at random. What is the probabilit

Natalija [7]

Answer:

Once

Step-by-step explanation:

5 0

3 years ago

En un pastel que se quiere repartir a 5 personas, se logran generar 8 piezas al cortarlo, cual de las siguientes expresiones ref

Anon25 [30]

Answer:

La respuesta es 1/5.

Step-by-step explanation:

porque el 1 pastel se divide en 5 personas.

Espero que esto ayude.

8 0

3 years ago

What are the coordinates of point R?

Klio2033 [76]

Answer:

The last one (-1,5)

Step-by-step explanation:

From (0,0), the R coordinate is one to the left meaning the x is negative and five up which means the y is positive 5 so... (-1,5) is the new location of R.

8 0

3 years ago