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wariber [46]
3 years ago
14

A local pizza restaurant surveyed a random sample of 150 people that live in their town about their favorite type of pizza. Of t

he people surveyed, 40 said that pepperoni pizza was their favorite type of pizza. There are 2,800 residents that live in the town.
Based on the data, is 750 a reasonable estimate for the number of residents in the town whose favorite pizza is pepperoni?

A) No, because the proportion of the sample whose favorite pizza is pepperoni is about 27%.

B) Yes, because the proportion of the sample whose favorite pizza is pepperoni is about 27%.

C) No, because the proportion of the sample whose favorite pizza is pepperoni is about 40%.

D) Yes, because the proportion of the sample whose favorite pizza is pepperoni is about 40%.
Mathematics
2 answers:
svlad2 [7]3 years ago
7 0

Answer:

B) Yes, because the proportion of the sample whose favorite pizza is pepperoni is about 27%.

Step-by-step explanation:

From data of survey we can estimate the proportion of the sample whose favorite pizza is pepperoni. That is 40 (say pepperoni is the favorite) from 150 (total of sample).

Proportion would be \frac{40}{150}=0.27 that is 27%.

Now we can calculate 27% of total of residents (2,800). We should multiply 27% by 2,800.

0.27*2,800=756 which is close to 750.

So we can conclude that yes, 750 is a reasonable estimate because the proportion of the sample whose favorite pizza is pepperoni is about 27%  

mrs_skeptik [129]3 years ago
4 0

Answer:

B

Step-by-step explanation:

it will be very clear

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Which properties are used in multiplying polynomials together?
meriva

Answer:

we use distributive property.

Step-by-step explanation:

for example:

4(5x+7)=

4x5x=20x

4x7=28

so the answer is:

20x+28

hope this helps : )

4 0
3 years ago
A survey was conducted to measure the height of men. In the survey, respondents were grouped by age. In the 20-29 group the grou
kotykmax [81]

Answer:

(a) The probability that his height is less than 66 inches is 0.2743.

(b) The probability that the height is between 66 and 71 inches is 0.4679.

(c) The probability that the height is more than 71 inches is 0.2578.

Step-by-step explanation:

The data given in the question is:

Mean (μ) = 68.4

Standard Deviation (σ) = 4

Let X denote the height of men. We will use the normal distribution z-score formula to calculate the z-score and then look up the probability in the normal probability distribution table. The z-score formula is:

z = (X - μ)/σ

(a) For P(X<66), first calculate the z value.

z = (66-68.4)/4

z = -0.6 (Look up this value in the standard normal distribution table)

P(z<-0.6) = 0.2743

The probability that his height is less than 66 inches is 0.2743.

(b) P(66<X<71)  = P(X<71) - P(X<66)

We need to find P(X<71) so, calculating the z-value:

z = (71-68.4)/4

z = 0.65

P(z<0.65) = 0.7422

P(66<X<71)  = 0.7422 - 0.2743

P(66<X<71)  = 0.4679

The probability that the height is between 66 and 71 inches is 0.4679.

(c) To find the probability P(X>71), we need to find P(X<71) and then subtract it from 1 because the normal distribution table gives values for P(X<k). We have already calculated the value of P(X<71) in part (b) so,

P(X>71) = 1 - P(X<71)

            = 1 - 0.7422

P(X>71) = 0.2578

The probability that the height is more than 71 inches is 0.2578.

3 0
3 years ago
What is the median number for the numbers 4, 8, 10, 5, 9
AVprozaik [17]


the answer is 10.

place your index fingers on the 4 & the 9 then move in toward the 10 the number in the middle is 10.

4 0
3 years ago
A segment in the coordinate plane has an endpoint with coordinates (1,2) and midpoint with coordinates (4,3). What are the coord
Serga [27]

Answer:

(7,4)

Step-by-step explanation:

midpoint formula (x1+x2)/2 , (y1+y2)/2

Look at x and y for the endpoints separately

midpoint x value = ( 1 + x)/2

4= (1 + x)/2

8 = 1 + x

x = 7

midpoint y value =  (2 + y)/2

3 = (2 + y)/2

6 = 2 + y

y = 4

endpoint (x,y) = (7,4)

8 0
3 years ago
What is the solution to the proportion n/18 = 5/9​
Andrei [34K]

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

                  Hello!

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ n = 10

18 ÷ 2 = 9

n ÷ 2 = 5

5 × 2 = 10

n = 10

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ

3 0
3 years ago
Read 2 more answers
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