Math Answers

find the missing parts of the triangle given below with 3 identified parts?

1.A=70 degrees 54' B=79 degrees 6' and a=20m

2.B=36 degrees 10' a=21m and b=30m

3.B=60degrees a=50m and c=60m

4.a=20m b=30m and c=40m

A MNP publisher of Statistics and Probability textbooks claims that the

average price of all hardbound textbooks is Php 500. A group of students

believes that the actual mean is higher and wishes to test their belief.

Find the area to the left of critical value t = 2.500 when sample size is 24

Three machines A, B and C produce respectively 50%, 30% and 20% of the total number of items of a factory. The percentage of defective output of these machines are 3%, 4% and 5% respectively. if an item selected at random, find the probability that the item is non-defective.

The average public elementary school has 468 students with a standard deviation of 87.If a random sample of 38 public elementary schools is selected,what is the probability that the number of students enrolled is between 445 and 485

A health specialist wants to determine the average number of hours a person

exercises in a day during the quarantine period. She found out that the mean number

of hours a person exercises in a day during the quarantine period is 80 minutes. A

random sample of 29 persons were surveyed and found that their mean is 65 minutes

and a standard deviation of 10 minutes. Test the hypothesis at 2% level of significance

and assume that the population is normally distributed.

A dart hits the circular dartboard shown below at a random point. Find the probability that the dart lands in the shaded square region. The radius of the dartboard is 9

in, and each side of the shaded region is 3in.

Two-tailed test; variance is known, alpha = 0.05 , n = 40

Number of occurrence of a tossing four coins

2900 dollars is placed in an account with an annual interest rate of 9%. How much will be in the account after 13 years, to the nearest cent?