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KengaRu [80]
2 years ago
10

1a) Qualifying Test Scores To qualify for a medical study, an applicant must have a systolic blood pressure in the 60% of the mi

ddle range. If the systolic blood pressure is normally distributed with a mean of 120 and a standard deviation of 3, find the upper and lower limits of blood pressure a person must have to qualify for the study. Round final answers to one decimal place.
Applicants must have a lower blood pressure limit of ___ and an upper blood pressure limit of ____to qualify for the study.

b) Bottled Drinking Water Americans drank an average of 23.2 gallons of bottled water per capita in 2004. If the standard deviation is 2.7 gallons and the variable is normally distributed, find the following probabilities. Use a graphing calculator and round the answers to four decimal places.

More than 25 gallons of bottled water.

p (more than 25 gallons of bottled water)=?


c) Police Academy Acceptance Exams In order to qualify for a police academy, applicants are given a test of physical fitness. The scores are normally distributed with a mean of 60 and a standard deviation of 6. If only the top 17% of the applicants are selected, find the cutoff score. Use a graphing calculator and round the answer to the nearest whole number.

The cutoff score for the top 17% of the scores is=?

d) The average teachers' salary in a certain state is $57,337. Suppose that the distribution of salaries is normal with a standard deviation of $7500. Assume that the sample is taken from a large population and the correction factor can be ignored. Use a TI-83 Plus/TI-84 Plus calculator and round the answer to at least four decimal places.
What is the probability that a randomly selected teacher makes less than $50,000 per year?

.Please answer all parts of the question. 1a to d
Mathematics
1 answer:
liberstina [14]2 years ago
4 0

Answer:

4 Only 5 points? im good nty

Step-by-step explanation:

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A farmer has 2,928 strawberries. He has 24 boxes and wants an equal number of strawberries in each
melomori [17]

Answer:

122 strawberries

Step-by-step explanation:

divide 2928 by 24 to get the number of strawberries in each box

4 0
3 years ago
A direct variation function contains the points (2, 14) and (4, 28). Which equation represents the function?
lara [203]

Answer:

y=7x

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

we have the points (2,14) and (4,28)

Find out the constant of proportionality k

k=y/x                      

For (2,14) ----> k=14/2=7

For (4,28) ----> k=28/4=7

so                              

the value of k=7            

therefore                                          

The equation  is                                                    

y=7x                

3 0
3 years ago
Read 2 more answers
Solve for x:<br> 2 - 6 = 0<br> X =<br><br> Help plz
antiseptic1488 [7]

Answer:

6

because when you subtract 6 from 6 you get 0

6 - 6 = 0

8 0
3 years ago
In parallelogram DEFG, DH = x + 5, HF = 2y, GH = 4x-3 and HE = 4y + 1. Find the values of x and y. The diagram is not drawn to s
GalinKa [24]
Rule: The diagonals of any parallelogram bisect each other. In other words, they cut each other in half.

This means DF is cut into two equal pieces: DH and HF.
Similarly, GE is cut into two equal pieces: GH and HE.

DH = HF
x+5 = 2y
x = 2y-5

GH = HE
4x-3 = 4y+1
4(x)-3 = 4y+1
4(2y-5)-3 = 4y+1 ... x has been replaced with 2y-5
8y-20-3 = 4y+1
8y-23 = 4y+1
8y-4y = 1+23
4y = 24
y = 6

If y = 6, then x is
x = 2y-5
x = 2(6)-5
x = 12-5
x = 7

--------------------------------------------

Answers: 
x = 7 and y = 6

5 0
3 years ago
286 children enter the brass band competition.There are 27 teachers who accompany them and 19 parents.How many people visit the
shutvik [7]

Answer:

332

Step-by-step explanation:

286+27+19

8 0
3 years ago
Read 2 more answers
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