Search & Filtering
Suppose the current annual salary of all teachers in the Philippines have a normal distribution with a mean of 95,000 pesos and a standard deviation of 20,000 pesos.
a. Find the probability that the annual salary of a randomly selected teacher would be between 56,000 and 76,000.
b. Find the probability that the annual salary of a randomly selected teacher would be at least 50,000 pesos.
c. Find the probability that the annual salary of a randomly selected teacher would be 126,000 pesos.
Draw a tree diagram to find the number of possible outcomes.
Martha has 4 pants and 3 shirts. How many different pairs of pants and shirts can he wear?
Draw a tree diagram to find the number of possible outcomes.
How many 3-digit numbers can be formed from the digits 1, 2, 3, and 4 if no digit is repeated in any number? How mang of these numbers are odd? How many are greater than 300? How many arr divisible by 11?
Find the number of possible outcomes by systematic listing.
If two dice arr rolled, how many possible outcomes are there? How many of these have a dot sum greater than 8? Less than 10?
1. Miss Romero noted that the mean scores of a random sample of 15 Grade 8 students who had taken a special test were 80.5. If the standard deviation of the scores was 3.1, and the sample came from an approximately normal population, find the point and the interval estimates of the population mean, using 95%confidence.
2. Edith has observed that the mean age of 18 youth volunteers in a barangay project is 17.5 years with a standard deviation of 2years. If the sample comes from an approximately normal distribution, what are the point and the interval estimates of the population mean? Adopt a 99% confidence level.
In a batch of 15 jars of instant coffee, 5 have been under filled. Suppose 6 of these jars are selected without replacement. If more than 1 of these selected jars are under filled, the whole batch is sent back for refill. What is the probability of the batch being sent back for refill? (Round off to 2 decimal places.)
The point estimate for the proportion of 16-kbit dynamics RAMs that function correctly for at least 1000 hours based on a sample size 100 is .91. Find a 95% confidence interval on p.
The mean annual salary of all the frontlines (nurses, medical technologists,radiologic technologists, phlebotomists) in the philippines is php 42,500.assume that this is normally distributed with standard deviation php 5,600.a random sample of 25 health workers is drawn from this population, find the probability that the mean salary of the sample is:
The mean annual salary of all the frontlines (nurses, medical technologists,radiologic technologists, phlebotomists) in the philippines is php 42,500.assume that this is normally distributed with standard deviation php 5,600.a random sample of 25 health workers is drawn from this population, find the probability that the mean salary of the sample is: a. Between Php 40,400 and Php 45,000
A bag contains 4 red, 3 pink, and 6 green balls. Two balls are drawn but the first ball drawn is not replaced.
a. find P(red, then pink) b. find P(pink then pink)
