Question

It is believed that first-year salaries for new fresh graduates follow a normal distribution with a...

It is believed that first-year salaries for new fresh graduates follow a normal distribution with a standard deviation of RM2,500. A random sample of 24 newly fresh graduates was chosen.

a. Find the probability that the sample standard deviation is more than RM3,000.

b.Find the probability that the sample standard deviation is less than RM1,500

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Let us suppose that the first-year salaries of Hamilton college graduates follow a normal distribution with...
Let us suppose that the first-year salaries of Hamilton college graduates follow a normal distribution with a mean of $50,000 and a standard deviation of $15,000. a. Find the proportion of students who will earn less than $40,000? b. What is the probability that a student will earn more than $80,000? c. How many students will earn between 35,000 and 65,000? d. What is the lowest salary for those in the top 15%? e. What is the maximum salary for...
Suppose that on the average starting salaries of new graduates in the USA $75,878 per year...
Suppose that on the average starting salaries of new graduates in the USA $75,878 per year with a standard deviation of $4,000. To justify this salary level, a random sample of 50 new graduates is selected. a) Define the sample and the population of this study. b) Define the sampling distribution of the sample mean, ?̅
Heights of 10 year old children, regardless of sex, closely follow a normal distribution with mean...
Heights of 10 year old children, regardless of sex, closely follow a normal distribution with mean 55.2 inches and standard deviation 5.4 inches. Round answers to 4 decimal places. a) What is the probability that a randomly chosen 10 year old child is less than 50.7 inches? b) What is the probability that a randomly chosen 10 year old child is more than 61.3 inches? c) What proportion of 10 year old children are between 50.6 and 59.5 inches tall?...
Heights of 10 year old children, regardless of sex, closely follow a normal distribution with mean...
Heights of 10 year old children, regardless of sex, closely follow a normal distribution with mean 54.1 inches and standard deviation 6.6 inches. Round answers to 4 decimal places. a) What is the probability that a randomly chosen 10 year old child is less than 49.2 inches? b) What is the probability that a randomly chosen 10 year old child is more than 62.4 inches? c) What proportion of 10 year old children are between 49.8 and 58.8 inches tall?...
Teacher salaries for a particular district are known to have a normal distribution with a mean...
Teacher salaries for a particular district are known to have a normal distribution with a mean of $38,500 and a standard deviation of $880. a)What is the probability that a randomly chosen teacher from this district makes less than $41,000? b)What is the probability that a randomly chosen teacher from this district makes more than $37,000? c)What is the probability that a randomly chosen teacher from this district has a salary between $36,000 and $38,000. d)One veteran teacher comments that...
A survey reported that the mean starting salary for college graduates after a three-year program was...
A survey reported that the mean starting salary for college graduates after a three-year program was $33,176. Assume that the distribution of starting salaries follows the normal distribution with a standard deviation of $3500. What percentage of the graduates have starting salaries: a. Between $30,000 and $38,000? Probability = b. More than $42,000? Probability = c. Between $38,000 and $42,000? Probability =
ncomes of accontants follow a normal distribution with a mean of $74,000 and a standard deviation...
ncomes of accontants follow a normal distribution with a mean of $74,000 and a standard deviation of $1,100. You a re running a small study of accounting salaries. What is the probability of finding a sample mean of $78,000 or more with a sample size of 8?
The number of University graduates in a town is estimated to follow a Binomial distribution with...
The number of University graduates in a town is estimated to follow a Binomial distribution with the probability of success p = 0.6. To test the null hypothesis a random sample of 15 adults is selected. If the number of graduates in the sample is between 6 and 12 inclusive, we shall accept the null hypothesis to be p = 0.6, otherwise we shall conclude that p 6= 0.6. Use the normal approximation to the binomial distribution to (i) Find...
A survey reported that the mean starting salary for college graduates after a three-year program was...
A survey reported that the mean starting salary for college graduates after a three-year program was $34,170.Assume that the distribution of starting salaries follows the normal distribution with a standard deviation of $3190. What percentage of the graduates have starting salaries: (Round z-score computation to 2 decimal places and the final answers to 4 decimal places.)   a. Between $31,800 and $38,200? Probability            b. More than $42,700? Probability            c. Between $38,200 and $42,700? Probability           
A survey reported that the mean starting salary for college graduates after a three-year program was...
A survey reported that the mean starting salary for college graduates after a three-year program was $34,180.Assume that the distribution of starting salaries follows the normal distribution with a standard deviation of $3950. What percentage of the graduates have starting salaries: (Round z-score computation to 2 decimal places and the final answers to 4 decimal places.)   a. Between $31,600 and $38,000? Probability            b. More than $44,100? Probability            c. Between $38,000 and $44,100? Probability