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Zanzabum
3 years ago
13

Sean is a bookworm on average he reads 1 1/2 pages in 3 1/3 min. Sean's average unit rate is?

Mathematics
2 answers:
kiruha [24]3 years ago
7 0
<span>1 1/2 = 3/2

3 1/3 = 10/3

3/2  /   10/3    = 3/2 x 3/10 = 9/20

answer
unit rate = 9/20 pages per minute</span>
hammer [34]3 years ago
4 0

Answer: Hello there!

we know that sean reads on average (1 + 1/2) pages in (3 +1/3) minutes, and we want to know Sean's average unit rate: this is, the amount of time needed to read one page.

then we have:

(1 + 1/2) pages per (3 +1/3) minutes

solving the parentheses:

(3/2) pages per (10/3) minutes

dividing both sides bi (3/2)

1 page per (10/3)*(2/3) minutes = 20/9 minutes = (2/9 + 18/9) minutes = (2 + 2/9) minutes

then Sean needs on average (2 + 2/9) minutes to read one page.

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2 years ago
The National Center for Health Statistics (NCHS) reports that 70%70% of U.S. adults aged 6565 and over have ever received a pneu
Marianna [84]

Answer:

11.44% probability that exactly 12 members of the sample received a pneumococcal vaccination.

Step-by-step explanation:

For each adult, there are only two possible outcomes. Either they received a pneumococcal vaccination, or they did not. The probability of an adult receiving a pneumococcal vaccination is independent of other adults. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

70% of U.S. adults aged 65 and over have ever received a pneumococcal vaccination.

This means that p = 0.7

20 adults

This means that n = 20

Determine the probability that exactly 12 members of the sample received a pneumococcal vaccination.

This is P(X = 12).

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 12) = C_{20,12}.(0.7)^{12}.(0.3)^{8} = 0.1144

11.44% probability that exactly 12 members of the sample received a pneumococcal vaccination.

3 0
2 years ago
T-shirts and More Print Shop will print any image on a mouse pad for a cost of $2 per mouse pad and a one-time charge of $12 to
Anna35 [415]

Answer:

275 mouse pads were printed

Step-by-step explanation:

562 - 12 = 550

550/2 = 275

4 0
2 years ago
Researchers are interested in the relationship between socio-economic class and unethical behavior in US adults. Therefore, 129
Sloan [31]

Answer:

Step-by-step explanation:

1)Population of Interest : All UC Berkeley Undergraduates

Sample : 129 UC Berkeley Undergraduates

2)

Can the results of the study be generalized to the population of interest?

No, because the sample is not representative of the population since it consists of only UC Berkeley undergraduates.

3)

No, because the the study is observational.

4 0
3 years ago
People attending a football game either supported the home team or the visiting team. If 1369 of the people attending supported
Anna [14]

Answer:

37%

Step-by-step explanation:

To find the percentage of people that supported the home team, we need to find the total number of people.

This is because the percentage of people supporting the home team will be given by:

Number of people supporting home team / total number of people

The total number of people is the people supporting the home team plus the people supporting the visiting team:

1369+2331=3700

<u>Therefore, our percentage will be:</u>

1369/3700

Plug this into our calculator and we get:

0.37

Convert that a percentage for a final answer of 37%

7 0
1 year ago
Read 2 more answers
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