Math Answers

Zaheeda scored 9 goals in 5 netball matches At this rate about how many goals will she score in 10 games

Two groups of children were given visual acity tests,group.group 1 was composed of 11 children who receive their health care from private physician.the mean score for this group was 26 with standard deviation of 5.group 2 was composed of 14 children who receive their health care from the health department and had an average score of 21 with a standard deviation of assume normally distributed population with equal variance calculate the 95%confidence interval

In a wage discrimination case involving male and female employees, it is assumed that male employees have a mean salary equal to that of female employees. To justify this, independent random samples of male and female employees were taken and the following result obtained.

Male Employees Female Employees

n1 = 100 n2 = 100

= Birr 20,600 = Birr 19,700

S1 = 3,000 S2 = Birr 2,500

Test the hypothesis with ( = 0.025. Does wage discrimination appear to exist in this case?

The recommended retail price of a brand of designer jeans is known. The price of the jeans in a sample of 16 retailers is on average $141 with a sample standard deviation of 4. If this is a ‘random’ sample and the prices can be assumed to be normally distributed, construct a 95% confidence interval for the average sale pric

What is the nth term rule of the linear sequence below?

27

,

25

,

23

,

21

,

19

,

How much was borrowed if a simple interest rate of 7.5% was offered payable in 12 months with interest of 105

Write the following into symbolic form:

Some student in this class has studied programming.

Two balls are drawn in succession without replacement of an containing 5 white balls and 6 black balls Let B be the random variable representing the number of black balls. Construct the probability distribution of the random variable R

 Let W be a random variable giving the number of heads minus the number of tails  

  in three tosses of a coin. List the elements of the sample space S for the three 

  tosses of the coin and to each sample point assign a value w of W.

1. An overseas shipment of 5 foreign automobiles contains 2 that have slight paint blemishes. If an agency receives 3 of these automobiles at random, list the elements of the sample space S, using the letters B and N for blemished and nonblemished, respectively; then to each sample point assign a value x of the random variable X representing the number of automobiles with paint blemishes purchased by the agency.