Question

The AAT is a standardized test with a known normal distribution having a mean of 400 and a standard deviation of 20.

Round your answers to 2 decimal places.

a) What percentage of people would you expect to score 340 or lower? Enter you answer in accordance to the item a) of the question statement%

b) What percentage of people would you expect to score 430 or higher? Enter you answer in accordance to the item b) of the question statement%

c) What percentage of people would you expect to score between 350 and 450? Enter you answer in accordance to the item c) of the question statement%

Answer #1

distribution of scores for a certain standardized test is a
normal distribution with a mean of 4 75 and the standard deviation
of 30
between what two values would you expect to find about 68%
between what two values would you expect to find about
99.7%

The average verbal GRE score is 400 with a standard deviation of
100. Based on this information, answer questions a-c
(a) What verbal GRE score will put a person in the
BOTTOM 53% ?
(b) Using the same mean verbal GRE score and standard deviation,
if 36 students took the GRE, how many people would be expected to
have verbal GRE scores ABOVE 350? Round to the
nearest person.
(c) Graduate school A requires students to have a verbal GRE...

Question1: It is known the population IQ score follows a normal
distribution with mean as 100, SD as 10. A researcher is interested
in studying if the average IQ of students from statistics courses
on average has a higher IQ score than the population IQ score. To
test this hypothesis, the researcher randomly collected a sample of
25 students from statistic class, the mean IQ score for this sample
is 110. Compete for the hypothesis test at significant level.
Step...

1.)
A distribution of values is normal with a mean of 210 and a
standard deviation of 3.
Find the interval containing the middle-most 78% of scores:
Enter your answer accurate to 1 decimal place using interval
notation. Example: (2.1,5.6)
Hint: To work this out, 1) sketch the distribution, 2) shade the
middle 78% of the data, 3) label unkown data values on the
horizontal axis just below the upper and lower ends of the shaded
region, 4) calculate the...

Of the 400 people signed up for the webinar only 300 actually
attended.
What are the odds of picking someone who attended the webinar
out of the 400 people?
Group of answer choices
a) 3 to 1
b) .75 to 1
c) 1 to 3
d) 3 to 4
What distribution would best model the sampling distribution
with a sample proportion of p-hat = .5 and with a sample size of
50?
Group of answer choices
a)z-distribution
b)normal distribution
c)chi-square...

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 118 and standard deviation of
17 . Someone qualifies as having Stage 2 high blood pressure if
their systolic blood pressure is 160 or higher. a. Around what
percentage of adults in the USA have stage 2 high blood pressure?
Give your answer rounded to two decimal places. % b. If you sampled
2000 people, how many would you expect to have BP>...

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 122 and standard deviation of
23 . Someone qualifies as having Stage 2 high blood pressure if
their systolic blood pressure is 160 or higher. a. Around what
percentage of adults in the USA have stage 2 high blood pressure?
Give your answer rounded to two decimal places. %
b. If you sampled 2000 people, how many would you expect to have
BP>...

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 117 and standard deviation of
16 .
Someone qualifies as having Stage 2 high blood pressure if their
systolic blood pressure is 160 or higher.
a. Around what percentage of adults in the USA have stage 2 high
blood pressure? Give your answer rounded to two decimal
places.
%
b. If you sampled 2000 people, how many would you expect to have
BP>...

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 121 and standard deviation of
20 . Someone qualifies as having Stage 2 high blood pressure if
their systolic blood pressure is 160 or higher.
a. Around what percentage of adults in the USA have stage 2 high
blood pressure? Give your answer rounded to two decimal places.
%
b. If you sampled 2000 people, how many would you expect to have
BP>...

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 119 and standard deviation of
24 .
Someone qualifies as having Stage 2 high blood pressure if their
systolic blood pressure is 160 or higher.
a. Around what percentage of adults in the USA have stage 2 high
blood pressure? Give your answer rounded to two decimal
places.
%
b. If you sampled 2000 people, how many would you expect to have
BP>...

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