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Leni [432]
1 year ago
11

A supermarket chain has 1,100 stores locations in all and 780 of them are in Florida The chain had total revenue of 33 billion l

ast year. assuming the stores have equal revenue. which of the following was correct for last year
A.) The revenue for all of the stores in Florida 31$ million per store

B.) The revenue for all of the stores in Florida was $23.4 billion

C.) The revenue for all of the stores in Florida was $24 billion

D.) The revenue was $29 million per store
Mathematics
2 answers:
FromTheMoon [43]1 year ago
8 0
The correct answer should be B
Setler [38]1 year ago
3 0

Answer:

the answer is b....i think

Step-by-step explanation:

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32​% of college students say they use credit cards because of the rewards program. You randomly select 10 college students and a
Tems11 [23]

Answer:

a) P(X=2)=(10C2)(0.32)^2 (1-0.32)^{10-2}=0.211

b) P(X> 2)=1-P(X\leq 2)=1-[0.0211+0.0995+0.211]=0.668

c) P(2 \leq x \leq 5)=0.211+0.264+0.218+0.123=0.816

Step-by-step explanation:

1) Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

2) Solution to the problem

Let X the random variable of interest, on this case we now that:

X \sim Binom(n=10, p=0.32)

The probability mass function for the Binomial distribution is given as:

P(X)=(nCx)(p)^x (1-p)^{n-x}

Where (nCx) means combinatory and it's given by this formula:

nCx=\frac{n!}{(n-x)! x!}

Part a

P(X=2)=(10C2)(0.32)^2 (1-0.32)^{10-2}=0.211

Part b

P(X> 2)=1-P(X\leq 2)=1-[P(X=0)+P(X=1)+P(X=2)]

P(X=0)=(10C0)(0.32)^0 (1-0.32)^{10-0}=0.0211  

P(X=1)=(10C1)(0.32)^1 (1-0.32)^{10-1}=0.0995

P(X=2)=(10C2)(0.32)^2 (1-0.32)^{10-2}=0.211

P(X> 2)=1-P(X\leq 2)=1-[0.0211+0.0995+0.211]=0.668

Part c

P(2 \leq x \leq 5)=P(X=2)+P(X=3)+P(X=4)+P(X=5)

P(X=2)=(10C2)(0.32)^2 (1-0.32)^{10-2}=0.211

P(X=3)=(10C3)(0.32)^3 (1-0.32)^{10-3}=0.264

P(X=4)=(10C4)(0.32)^4 (1-0.32)^{10-4}=0.218

P(X=5)=(10C5)(0.32)^5 (1-0.32)^{10-5}=0.123

P(2 \leq x \leq 5)=0.211+0.264+0.218+0.123=0.816

6 0
3 years ago
What is the surface area of a tank that has a length of 30 feet, a width of 15 feet?
Lady bird [3.3K]

Answer:

450

Step-by-step explanation:

Multiply the length (30) by the width (15)

30x15=450

8 0
3 years ago
Why people made up ratios ?
Allushta [10]
They created ratios so people could get information.
8 0
3 years ago
Which are the solutions of the quadratic equation?
aivan3 [116]
So here just plug values into the quadratic formula x= -b+- sqr b^2-4ac / 2a
6 0
3 years ago
Read 2 more answers
Verify (−25) x [15 + (−5)] = [(−25) x 15] + [(−25) x (−5)
KengaRu [80]

Answer:

Take L.H.S and the R.H.S

Step-by-step explanation:

Taking L.H.S

-25*(15+(-5)

-25*(15-5)

-25*(10)

-250

Taking R.H.S

(-25*15)+(-25*(-5)

-375+125

-250

Verified

7 0
3 years ago
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