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3 years ago

Danny’s grandmother made b buns and c cookies and wants to put p things on each plate. How many plates does she need?

2 answers:

3 0

Plates needed=(b+c)/p
Let's say she has a total of 70 buns and cookies. And she wants to put 5 of one or the other on each plate. Then, she needs 70/5, or 14 plates
☺☺☺☺

Natasha_Volkova [10]3 years ago

3 0

Answer: The number of plates needed is (C + B)/P

Step-by-step explanation:

Ok, we have C cookies, B buns, and she wants to put P things in each plate.

The number of plates can be obtained by:

(C + B)/P = N

Where you divide the total number of things (cookies + buns) into the number P, that is the number that goes in each plate, and in this way, you find how many groups of P things there are, and that number of groups is equal to the number of plates needed.

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ind the value of the test statistic z using z equals StartFraction ModifyingAbove p with caret minus p Over StartRoot StartFract

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$z=\frac{0.262 -0.25}{\sqrt{\frac{0.25(1-0.25)}{530}}}=0.638$

Step-by-step explanation:

Data given and notation

n=530 represent the random sample taken

X=139 represent the yellow pods in the random sample

$\hat p=\frac{139}{530}=0.262$ estimated proportion of yellow pods

$p_o=0.25$ is the value that we want to test

$\alpha$ represent the significance level

z would represent the statistic (variable of interest)

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

Concepts and formulas to use

We need to conduct a hypothesis in order to test the claim that the true proportion is 0.25 or 25%:

Null hypothesis: $p=0.25$

Alternative hypothesis: $p \neq 0.25$

When we conduct a proportion test we need to use the z statistic, and the is given by:

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

The One-Sample Proportion Test is used to assess whether a population proportion $\hat p$ is significantly different from a hypothesized value $p_o$ .

Calculate the statistic

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

$z=\frac{0.262 -0.25}{\sqrt{\frac{0.25(1-0.25)}{530}}}=0.638$

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2 years ago