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!
1. In an attempt to measure the emotional effect of a proposed billboard ad, an advertising agency checks the pulse rate of 10 persons before and after they are shown a photograph of the billboard. The agency believes that an effective billboard will increase the pulse rate of those who view it. In its test, the agency found the mean change in pulse rate was 15.7 beats per minute, with a standard deviation of 1.6. Using the 0.01 level of sig- nificance, examine whether the billboard stimulus could meet the agency's criterion for effectiveness.
2. The students in an aerobics class have been weighed both before and after the 5-week class, with the following results:
Person Number
Weight Before
Weight After
1
198 lb
194 lb
2
154
151
3
124
126
4
110
104
5
127
123
6
162
155
7
141
129
8
180
165
Using the 0.05 level of significance, evaluate the effectiveness of the program. Using the appropriate statistical table, what is the most accurate statement we can make about the p-value for this test?
Suppose that an individual stock's return is normally distributed with a mean of 10% and a standard deviation of 8%. What is the probability that the stock's return will be at least 16%?
Plot CEO salaries against the net profit of their respective companies, do you expect to find a linear correlation between the two?
Exercise on Inventory Pricing
The time in minutes until the paint was dry enough for a second coat to be applied was recorded. The following data were obtained. Test to see whether the mean drying time is the same for each type of paint.
Speaking to a group of analysts in January 2006, a brokerage firm executive claimed that at least 70% of investors are currently confident of meeting their investment objectives.
in studying the occurence of genetic characteristics the following sample data were obtained. at the 0.05 significance
Correlation between the two variables - Evaluate the value of the correlation coefficient.
Use each decision criterion (maximin, maximax, minimax regret, expected value) to determine the price that Pizza King should charge.
what does it mean to say there is error in our regression?we calculated it wrongthere were data entry errors.we can not
a sample of 210 bell computers has 56 defectives. theory suggests that a third of all bell computers should be
If a manager wishes to develop a confidence interval estimate for estimating the difference between two population means, an increase in the size of the samples used will result in:
What is the probability that the mean breaking strength of the 3 untreated specimens is at least 25 pounds greater than the mean strength of the 3 treated specimens?
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