17. For random samples of size n = 25 selected from a normal distribution with a mean of mean of u = 50 and a standa deviation of o = 20, find each of the following: a. The range of sample means that defines the middle 95% of the distribution of sample means. ANSWER I b. The range of sample means that defines the middle 99% of the distribution of sample means. ANSWER I
17. For random samples of size n = 25 selected from a normal distribution with a mean of mean of u = 50 and a standa deviation of o = 20, find each of the following: a. The range of sample means that defines the middle 95% of the distribution of sample means. ANSWER I b. The range of sample means that defines the middle 99% of the distribution of sample means. ANSWER I
Chapter9: Sequences, Probability And Counting Theory
Section9.7: Probability
Problem 1SE: What term is used to express the likelihood of an event occurring? Are there restrictions on its...
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Help me solve question 17 a and b
Transcribed Image Text:Uistribution is positively skewed, what is the probability of obtaining a sample mean greater th
for a sample of n = 4? (Please read question carefully).
c. If the population distribution is normal, what is the probability of obtaining a sample mean greater than M = 32 f
С.
sample of n = 64?
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d. If the population distribution is positively skewed, what is the probability of obtaining a sample mean greater than I
for a sample of n =
64?
17. For random samples of size n = 25 selected from a normal distribution with a mean of mean of u = 50 and a standard
deviation of o = 20, find each of the following:
a. The range of sample means that defines the middle 95% of the distribution of sample means.
ANSWER 4
b. The range of sample means that defines the middle 99% of the distribution of sample means.
ANSWER 4
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18. The distribution ages for students at the state college is positively skewed with a mean of u = 21.5 and a standard deviation of
0 = 3.
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a. What is the probability of selecting a random sample of n = 4 students with an average age greater than 23? (Please
read question carefully.)
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