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KengaRu [80]
3 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]3 years ago
4 0

Answer:

4 Only 5 points? im good nty

Step-by-step explanation:

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Which of the following are properties of a perfect square trinomial? Select all that apply.. A.Neither of the perfect squares ca
aliya0001 [1]
Definition 1: Perfect squares are numbers or expressions that are the product of a number or expression multiplied to itself (7 times 7 is 49, so 49 is a perfect square).

Definition 2: <span>Binomials are algrebraic expressions containing only two terms.</span><span />
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</span><span>Definition 3: Trinomials are algebraic expressions that contain three terms. </span><span />

Perfect square trinomials are algebraic expressions with three terms that are created by multiplying a binomial to itself. There are two formulas for perfect square trinomials:
(a+b)^2=a^2+2ab+b^2, \\ (a-b)^2=a^2-2ab+b^2.
From these formulas you can see that:
A. <span>"Neither of the perfect squares can have a minus sign" is true statement;
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B. "<span>The first and third terms must be perfect squares" is true statement;
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C. "<span>If the perfect square terms are a^2 and b^2 then the other term must be (ab)^2" is false statement;
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D. "<span>None of the above is a property of a perfect square trinomial" is consequently false statement.
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3 0
3 years ago
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Need help, Iĺl give brainliest &lt;3
Pavel [41]

Step-by-step explanation:

djjddjd dndbbdbsjsbsbsnsns

8 0
3 years ago
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N× $3.25= $325.00<br><br>N=_____<br><br>Please EXPLAIN
igor_vitrenko [27]
Its multiplication so you divide both sides by 3.25 and that leaves u with N=100 because 325.00 divide by 3.25 is 100
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3 years ago
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Jonathan had to rent a car for one day while his car was getting fixed , the car rental costs $23 per day plus $2 for every mile
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The answer is B. 23+2x>100
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What is the GCF of 14 and 21
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Hey there the answer is, 

<span>The Greates Common Factor (GCF) is:   7
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