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anastassius [24]
4 years ago
5

The first day of the food drive missed easily for cans of beans 7 boxes of noodles and for cans of soup. Find the ratio of cans

of fruit to the total number of food items collected.
Mathematics
1 answer:
DochEvi [55]4 years ago
8 0
There is only the number 7 in this question I can’t really help with one number
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A market research analyst claims that 32% of the people who visit the mall actually make a purchase. You think that less than 32
Rainbow [258]

Answer:

E. -1.48

Step-by-step explanation:

The test statistic is:

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the expected value, \sigma is the standard deviation and n is the size of the sample.

A market research analyst claims that 32% of the people who visit the mall actually make a purchase.

This means that:

\mu = 0.32

\sigma = \sqrt{0.32*0.68} = 0.4665

You stand by the exit door of the mall starting at noon and ask 82 people as they are leaving whether they bought anything. You find that only 20 people made a purchase.

This means that n = 82, X = \frac{20}{82} = 0.2439

The value of the test statistic is about:

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

t = \frac{0.2439 - 0.32}{\frac{0.4665}{\sqrt{82}}}

t = -1.48

So the correct answer is given by option E.

3 0
3 years ago
A pizza parlor offers 4 different pizza toppings. How many different kinds of 2-topping pizzas are available?
Galina-37 [17]
Order does not matter so use "n choose k" formula is used to find number of unique combinations.

c=n!/(k!(n-k)!)  where n is total possible choices and k is number of selections.

c=4!/(2!(4-2)!)

c=4!/(2!2!)

c=24/(2*2)

c=24/4

c=6

So there are 6 different two topping options when there are four different toppings to choose from.
6 0
4 years ago
Read 2 more answers
The ratio of the heights of two similar cylinders is 1:3. If the volume of the smaller cylinder is 67cm3, find the volume of the
Inessa [10]

Answer:

solution given:

similar cylinders ratio 1:3

let the ratio be 1x and 3x respectively:

according to the question:

x/3x=volume of (smaller cylinder/big cylinder)

Volume of big Cylinder=67cm³×3=201cm3

201cm³ is your answer

4 0
3 years ago
if i had 2 cookies and one of my friends asked for 1, then another friend asked for 1, then another friend asked for one. what d
hodyreva [135]
You take the cookies the cookies back from them and tell them to get their own
7 0
3 years ago
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Use algebraic rules of equations to predict the solution type to the system of equations. Include all of your work for full cred
Tasya [4]

y=-4-x

y=2x-1


-4-x=2x-1

3x=-3

x=-1

y=-3


The type of equation is consistent because they intersect at ( -1,-3 )



8 0
3 years ago
Read 2 more answers
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