Math Answers

1.If sin = 12, and is in QI, find sec data .

2.Given cos =35 , is in QIV, find csc data.

3.Find the exact values of the circular functions whose =-3π/4.

a) If 28 counters are a whole set, how many are there in five sevenths of the set?  

b) If 32 counters are four fifths of a set, how many counters are in a full set? Illustrate the your answer.

express the null hypothesis and alternative hypothesis in notation form of the scenario " it is believe that we that the mean yearly salary of professors in the philippines is 480,000.00 p pesos. a random sample of 65 professors revealed a mean salary of 500,000.00 pesos. can it be concluded the the mean salary is greater than 480,000.00 pesos? give the solution

2. State at least 2 application of cryptography in engineering.

between 0 and 0.47

Defects in a certain wire occur at the rate of one per 10 meter. Assume the defects have a Poisson distribution. What is the probability that: (a) a 20-meter wire has no defects? (b) a 20-meter wire has at most 2 defects?

Question.1:

An adult has on average 5.4 liters of blood. Assume the variable is normally distributed and has a standard deviation of 0.4. Find the percentage of people who have less than 5.7 litres of blood in their system.

Question.2 :

The average annual salary for all U.S teachers is $ 48,675. Assume that the distribution is normal and the standard deviation is $ 4995. Find the probability that a randomly selected teacher earns:

(i) Between $36000 and $42000 a year.

(ii) More than 40,000 a year.

Question.3:

The average daily jail population in the U.S is 706,242. If the distribution is normal and the standard deviation is 52,145, find the probability that on a randomly selected day the jail population is:

(i) Greater than 750,000

(ii) More than 600,000 but not more than 700,000

1) A random sample is drawn from a population of known standard deviation 10. Construct a 90% confidence interval for the population mean based on the information given n = 36 𝑥 = 100