Question
In: Statistics and Probability
1. The SAT test scores have an average value of 1200 with a standard deviation of...
1. The SAT test scores have an average value of 1200 with a standard deviation of 100. A random sample of 35 scores is selected for study.
A) What is the shape, mean(expected value) and standard deviation of the sampling distribution of the sample mean for samples of size 35?
B) What is the probability that the sample mean will be larger than 1235?
C) What is the probability that the sample mean will fall within 25 points of the population mean?
D) What is the probability that the sample mean will be less than 1180?
2. Assume that the population proportion of adults having a college degree is 0.44. A random sample of 375 adults is to be selected to test this claim.
A) What are the shape, mean, and standard deviation of the sampling distribution of the sample proportion for samples of 375?
B) What is the probability that the sample proportion will be less than 0.50?
C) What is the probability that the sample proportion will fall within 4 percentage points(+/- 0.04) of the population proportion?
Solutions
orchestra answered 1 year agoRelated Solutions
1. The SAT test scores have an average value of 1200 with a standard deviation of...
1. The SAT test scores have an average value of 1200 with a
standard deviation of 105. A random sample of 35 scores is selected
for study.
A) What is the shape, mean(expected value) and standard
deviation of the sampling distribution of the sample mean for
samples of size 35?
B) What is the probability that the sample mean will be larger
than 1235?
C) What is the probability that the sample mean will fall
within 25 points of the...
The SAT test scores have an average value of 1200 with a standard deviation of 100....
The SAT test scores have an average value of 1200 with a
standard deviation of 100. A random sample of 35 scores is selected
for the study.
A) What are the shape, mean(expected value) and standard
deviation of the sampling distribution of the sample mean for
samples of size 35?
B) What is the probability that the sample mean will be larger
than 1235?
C) What is the probability that the sample mean will fall within
25 points of the...
SAT scores have an average of 1200 with a standard deviation of 60. a. For a...
SAT scores have an average of 1200 with a standard deviation of
60.
a.
For a sample of 36, what is the probability that the sample
mean will be within 5 points of the mean?
b.
For a sample of 36, what is the probability that the sample
mean will be with 10 points of the mean?
c.
For a sample of 100, what is the probability that the sample
mean will be within 5 points of the mean?
d....
1. SAT scores are distributed with a mean of 1,500 and a standard deviation of 300....
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SAT scores have a mean of 1000 and a standard deviation of
220.
Q18: What is the probability that a random student will score
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that sample of 100 students will have an average score less than
990?
Q20: Using the Central Limit Theorem, what is the probability
that sample of 100 students will have an average score between 990
and 1010?
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1) SAT Test Required Scores The scores for males on the math portion of the SAT I test are normally distributed with a mean of 531 and a standard deviation of 114(based on data from the college board).
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a standard deviation of 102. In order to qualify for a college you
are interested in attending your SAT math score must be in the
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on the SAT to qualify for the college?
2. If you get into this college you are interested in running
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The test scores for a math exam have a mean of 72 with a standard deviation...
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Let the random variable X represent an exam score.
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(decimal answer, round to 3 decimal places)
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SAT scores of students at an Ivy League college are distributed with a standard deviation of...
SAT scores of students at an Ivy League college are distributed with a standard deviation of 250 points. Two statistics students, Raina and Luke, want to estimate the average SAT score of students at this college as part of a class project. They want their margin of error to be no more than 25 points.
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