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!
Company W is testing a sales software. Its sales force of 500 people is divided into four regions: Northeast, Southeast, Central, and West. Each salesperson is expected to sell the same amount of products. During the last 3 months, only half of the sales representatives in each region were given the software program to help them manage their contacts. The Northeast using the software sold 165 and the group with no software sold 100, The Southeast with software sold 200 and the group with no software sold 125. The Central groups with software sold 175 and the group with no software sold 125. The West group with software sold 180 and the group with no software sold 130. Using this data calculate the Chi Square statistic.
The VP of Sales at WidgeCorp, who is comfortable with statistics, wants to know the possible null and alternative hypotheses for a nonparametric test on this data using the chi-square distribution. A nonparametric test is used on data that are qualitative or categorical, such as gender, age group, region, and color. It is used when it does not make sense to look at the mean of such variables. (You can refer to the article for this phase for further information.) The following are assumptions you might make in this assignment that might make the assignment more helpful and make the responses more uniform:
Continue to use the Widgecorp context. Assume the salespersons are test sales of snack foods or drinks.
Additionally, assume you have the same number of salespersons in each region.
A random sample of size 26 is drawn from a population having a normal distribution. The sample mean and the sample standard deviation from the data are given, respectively, as x = -2.22 and s = 1.67. Construct a 98% con?dence interval for the popu..
Find the probability that for a randomly selected office hour, the number of student arrivals is 3. (b) What is the probability that he will get at most 5 students in a randomly selected office hour?
a well-insulated rigid tank of volume 10 ft3 contains carbon dioxide initially at 30 psia and 60f. the tank is
a control chart for fraction nonconforming indicates that the current process average is 0.03. the sample size is
The ACT is an exam used by colleges and universities to evaluate undergraduate applicants. The test scores are normally distributed. In a recent year, the mean test score was 21.1 and the standard deviation was 5.0.
Determine the value of test statistic z using z = ^p-P ^pq/n. Claim is that proportion of drowning deaths of children attributable to beaches is more than 0.25, and sample statistics.
Many samples, each of 100 observations, are drawn from a population in which there is a correlation of 0.70 between two variables. How often would you expect to find a statistically significant correlation?
a box of 1000 stuffed dinosaurs contains 100 that are missing their tails oh no. two dinos are drawn at random and
A store asked 250 of its customers whether they were satisfied with the service or not. The responses were also classified according to the gender of the customers. We want to study whether there is a relationship between satisfaction and gender.
Be certain to mention what inferential statistics is and why we use it, what is random sampling, which is statistical significance and why we test it.
Compare these plots to the corresponding ones in the text for highway gas mileage. Are there any surprises in these city gas mileage plots?
discuss the concept of expected frequencies and summarize the steps involved in computing
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