Statistics and Probability Answers

The average mark of candidates in an aptitude test was 128.5 with a standard deviation of 8.2. Three scores extracted from the test are 148,102,152. What is the average to the extracted scores that are extreme values(outliers)

there are 20 people in a room singing. the mean age of 12 of the members is 18years. the mean age of the remaining 8 is 23 years. what is the mean age of the 20 members of the singing group

There are 20 people in a singing group. The mean age of 12 of the members is 18 years. The mean age of the remaining 8 is 23 years. What is the mean age of the 20 members of the singing group?

The average mark of candidates in an aptitude test was 128.5 with a standard deviation of 8.2. Three scores extracted from the test are; 148, 102, 152. What is the average of the extracted scores that are extreme values (outliers).

The average mark of candidates in an aptitude test was 128.5 with a standard deviation of
8.2. Three scores extracted from the test are; 148, 102, 152. What is the average of the
extracted scores that are extreme values (outliers)?

The average mark of candidates in an aptitude test was 128.5 with a standard deviation of 8.2. Three scores extracted from the test are; 148, 102, 152. What is the average of the extracted scores that are extreme values (outliers)?

Autism South Africa knows the true population proportion of children with autism is special need school is 0.74. Assume a sample size of 100 children with autism is selected, what is the probability that the sample proportion is between 0.7 and 0.84?

The average mark of candidates in an aptitude test was 128.5 with a standard deviation of
8.2. Three scores extracted from the test are; 148, 102, 152. What is the average of the
extracted scores that are extreme values (outliers)?

Consider a population with a mean of 70 and a standard deviation of 6. A random sample of size 36 is drawn. What is the probability that the sample mean is less than 67.5?

the probability function of a discrete random variable x is given by p(x) = q x x = 1 2 3 4

1. value of q
2. probability distribution table of x
3. mean