Search & Filtering
Analyze and solve the following problems.
a. What is the probability that when you roll a die, the outcome is an even number?
b. What is the probability that when you determine the blood type of an individual his or her blood type is type O?
c. In a standard deck of cards, what is the probability of drawing a card that is a heart or an ace?
d. A coin is tossed thrice. What is the probability of obtaining exactly 2 heads occur?
e. According to the recent news, the probability of raining today is 65%. What is the probability of not raining today?
State the sample space for each other of the following random experiments.
a. tossing a coin
b. rolling a die
c. number of male children in a family of 2 children
d. identifying the blood type of an individual
e. determine the civil status of an individual
Suppose the random variable X has the uniform distribution on the integers 10,11,12
......,30 Find probability that X is the prime number
1. The prices for LED are listed: 22 500, 24 000, 21 500, 20 200, 20 600, 21 100, 210 000, 19 300, 25 000 and 22 500. Estimate the true mean of the data set with 90% confidence level.
1. Find the sample size to estimate a population mean within 95% confidence if the standard deviation is 6.2.
1. A study of 40 SHS English teachers established that they spent 12.6 minutes revising a student’s term paper.
a. Find the 90% confidence interval in the mean time for all composition papers when minutes.
b. If the teacher affirmed that she spent an average of 30 minutes revising a term paper, what would be your reaction?
How many ways can a club select a president, vice president, and a secretary from a group of 9 people?
random samples with sise 4 are drawn from the population containing the values 14, 19, 26, 31, and 53
- construct a sampling distribution of the sample means.
- find the mean of the sample means.
- compute the standard error of the sample means.
Professor Z conducted a periodic examination on all his students enrolled in Math 11. The scores are normally distributed with a population standard deviation of 10. He randomly selected 125 students and obtained a mean score of 60.
a, What is the population of interest?
b. What is the point estimate of the population mean?
c. Compute the standard error of the mean.
d. At 95% confidence level, what is the margin of error?
e. Find the 90% confidence interval for the population mean.
f. Find the 95% confidence interval for the population mean.
g. Find the 98% confidence interval for the population mean.
random samples with sise 4 are drawn from the population containing the values 14, 19, 26, 31, and 53
