Question

A large Software company gives job applicants a test of programing ability and the mean for...

A large Software company gives job applicants a test of programing ability and the mean for that testhas been 180 in the past with a population std. dev. of 20. A random sample from 35 applicantsshows a mean of 183. Use a 0.5 level of significance to test the claim that this sample comes from apopulation with a mean greater than 180.

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
A large software company gives job applicants a test of programming ability and the mean for...
A large software company gives job applicants a test of programming ability and the mean for the test has been 160 in the past. Twenty-five job applicants are selected from one large university and they produce a mean score and standard deviation of 183 and 12, respectively. Use a 0.05 level of significance to test the claim that this sample comes from a population with a mean score greater than 160.
A large software company gives job applicants a test of programming ability and the mean for...
A large software company gives job applicants a test of programming ability and the mean for that test has been 182 in the past. Twenty five job applicants are randomly selected, and they produce a sample mean score of 186 and a sample standard deviation of 12. Use a 5% level of significance to test the claim that this sample comes from a population with a mean score greater than 182. Assume the distribution is normally distributed.(Round to two decimal...
A large software company gives job applicants a test of programming ability and the mean for...
A large software company gives job applicants a test of programming ability and the mean for that test has been 160 in the past. Twenty-five job applicants are randomly selected from a large university and they produce a mean score of 183 and a standard deviation of 12. Use a 5% significance level and the critical-value method to test whether the mean score for students from this university is greater than 160. Assume the population is normally distributed. Correctly state...
A large software company gives job applicants a test of programming ability and the mean for...
A large software company gives job applicants a test of programming ability and the mean for that test has been 160 in the past. Assume that the test scores are normally distributed. Twenty-five job applicants are randomly selected from one large university and they produce a mean score and standard deviation of 168 and 12, respectively. Use a 0.05 level of significance to test the claim that this sample comes from a population with a mean score greater than 160....
A factory hiring people to work on an assembly line gives job applicants a test of...
A factory hiring people to work on an assembly line gives job applicants a test of manual agility. This test counts how many strangely shaped pegs the applicant can fit into matching holes in a one-minute period. The table below summarizes data collected for 90 applicants - 45 men and 45 women: Male Female n 45 45 Mean 20.05 17.34 Std Dev 2.708 3.65 Find separate 90% confidence intervals for the average number of pegs males and females can correctly...
In 1990, 5.8% of job applicants who were tested for drugs failed the test. A random...
In 1990, 5.8% of job applicants who were tested for drugs failed the test. A random sample of 1640 current job applicants results in 64 failures (based loosely on data from the American Management Association). At the α = 0.01 significance level, test the below claim (i.e., that the failure rate is now lower) HO: p = 0.058 HA: p < 0.058 a) Is this an upper tail, lower tail, or two-tail test? b) Are we testing means or proportions?...
A large manufacturing firm tests job applicants who recently graduated from colleges. The test scores are...
A large manufacturing firm tests job applicants who recently graduated from colleges. The test scores are normally distributed with a mean of 500 and a standard deviation of 50. If an applicant is selected at random, what is the probability that he/she has a score between 438 and 604?
A large manufacturing firm tests job applicants. Test scores are normally distributed with a mean of...
A large manufacturing firm tests job applicants. Test scores are normally distributed with a mean of 500 and a standard deviation of 50. -what proportion of people get scores between 400 and 600? -What proportion of people get higher than 450?
Suppose the scores on a reading ability test are normally distributed with a mean of 65...
Suppose the scores on a reading ability test are normally distributed with a mean of 65 and a standard deviation of 8. A) If one student is chosen at random, what is the probability that the student's score is greater than 81 points"? B) If 500 students took the reading ability test HOW MANY students would expect to earn a score greater than 81 points? c) Find the probability of randomly selecting 35 students (all from the same class) that...
You are interested in on-the-job anxiety among police officers and want to empirically test if the...
You are interested in on-the-job anxiety among police officers and want to empirically test if the shift they work influences their anxiety. You hypothesize that there is a difference in anxiety on the job between police officers who work FIRST shift and police officers who work THIRD shift. You collect data from a large random sample of officers from both shifts. You find that the average on-the-job anxiety for officers who work FIRST shift is 12.8 (std dev = 2.76),...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT