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. When is the t-test statistic used in a hypothesis test for the difference between two means?
2. Given a sample of size n1 = 40 from a population with a standard deviation σ1 = 20, and an independent sample of size n2 = 50 from another population with a known standard deviation σ2 = 10, what is the value of z-stat when testing for the difference in two population means if x1 = 72 and x2 = 66?
3. When conducting a two-tailed test for equality of means, what is the t-crit value:
(a) when n1 = 14,n2 = 26 and α = 0.05?
(b) when n1 = 54, n2 = 38 and α = 0.05?
30% of the college of business students major in finance. A random sample of 20 students is selected. What is the probability that no more than 3 students of the selected students are majoring in finance?
Create a hypothesis and perform a series of tests to determine if there is any fundamental difference in the findings.
The statewide incidence of gonorrhea is 50 per 100,000 over a 3 month period. Is the number of gonorrhea cases in this county unusual for this time period?
4. Why is a 99% confidence interval wider than a 95% confidence interval?
a tire manufacturer wants to determine the inner diameter of a certain grade of tire. ideally the diameter would be
consider the following joint probability density function of the random variables x and y fxy 3x-y9 for 1ltxlt3 and
Compute the 99% confidence interval for the population mean based on the sample 62, 68, 61, 64, 65, 62, and 66. Then, change the number from 66 to 16 and calculate the confidence interval.
A sample of 50 people found that 32 paid with their own money, 10 paid using insurance, and 8 paid using Medicare. At a = 0.05 is the assumption correct? Use the P-value method. What would be an implication of the results?
the probability that sammy makes his own lunch is 0.75. the probability increases to 0.8 if he made his own lunch the
the weight of food packed in certain containers is a random variable with a mean of 16 oz. and a standard deviation of
the cooper auto repair center has just received a shipment of 1000 spark plugs from a supplier. in past shipments the
suppose that three parachutists operate independently lands at a random point on a line between markers a and b. what
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