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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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Coordinates are written in the form (x,y), x being a certain length along the horizontal x axis and y being a certain height along the vertical y axis. Positive y numbers are in the top half of the plane and negative y numbers are on the bottom. Positive x numbers are on the right side of the plane and negative x numbers are on the left. Therefore, (3,-7) would be 3 across to the right from the origin (where the x and y axes intersect) at (3,0) and 7 downwards from that point to (3,-7).
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3 years ago
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I need e-learning help ugh ... ASAP
miskamm [114]

Answer:

600 m

Step-by-step explanation:

You know that she walks 1 meter in 1 second, but they're asking about minutes. Since 60 seconds are in 1 minute, it means she was 60 meters in 1 minute. Then multiply that by 10 (10 minutes).

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3 years ago
Write the expression as a whole number with a negative exponent. Do not evaluate the expression.
WINSTONCH [101]

Answer: \frac{1}{3^6}=3^{-6}

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\frac{1}{3^6}=(3^6)^{-1}=3^{6(-1)}=3^{-6}

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Find an equation for a line that is normal to the graph of y=xe^x and goes through the origin
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Y = xe^x
dy/dx(e^x x)=>use the product rule, d/dx(u v) = v*(du)/(dx)+u*(dv)/(dx), where u = e^x and v = x:
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