Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
The mean weight of all 20-year old women is 130 pounds. A random sample of 30 women athletes who are 20 years old showed a sample mean of 126 pounds with a standard deviation of 15 pounds. Researchers wanted to determine whether the mean weight for 20-year old women athletes is significantly less than 130, using a significance level of 0.05.
a. Write the null and alternate hypothesis.
b. Calculate the test statistic and write a conclusion for this question.
c. Now suppose a sample of 100 women athletes was taken and the same mean (126) and standard deviation (15) was achieved. Repeat the test.
d. Explain what caused the difference between the outcomes for parts b and c.
When coaching or training athletes, the tests employed to predict performance or determine training methods incorporate statistical methods. Why are these methods so effective?
Compute the within group variability. Do you require any post hoc testing? Why or why not? Decribe in detail.
What is the relationship between a confidence interval and a single sample, two-tailed hypothesis test? How are they the same? How are they different?
fran believes that the odds in favor of her team winning the basketball game tomorrow are 9 to 7. what is the
a mobile phone has an advertised life of 30000 hours. a sample of 50 phones had a life of 28500 hours with a standard
q1. the mean of a normal probability distribution is 60 the standard deviation is 5.a what percent of the observations
question eighteen per cent of multinational companies provide an allowance for personal long-distance calls for
Calculate Probability of Point Falling Outside Standard Deviation
This activity is a revision of an activity found in Real Data: A Statistics Workbook Based on Empirical Data by Z. C Holcomb (1997). Published by Pyrczak Publishing.
You read a report that says, "On the basis of the simple random sample of 100 high school seniors that took the SATM test this year, a confidence interval for µ is found to be 512.00 ± 25.76." What was the confidence level used to calculate this..
the director of advertising for the carolina sun times the largest newspaper in the carolinas is studying the
A researcher is using a chi-square test to determine whether there are any preferences among four brands of cola. With alpha = .05 and a sample of n = 30, what is the boundary for the critical region for the hypothesis test.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd