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!
Safeway stocks national brands of coffee, as well as its own house brand. Consider a single randomly selected customer purchasing coffee and let "success" = the customer purchases a national brand. Assume p = 0.75, and that customers make coffee purchase decisions independently of one another. Also, assume that X = number among 20 randomly selected coffee purchasers who select a national brand, and that the random variable X follows the binomial distribution.
a. What is the probably that at most 15 customers choose a national brand?
b. What is the probability that exactly 15 customers choose a national brand?
c. What is the probability that at least 12 customers select a national brand?
d. Calculate the mean (i.e., the expected value) and the variance of the random variable X.
A random sample of 52 groups gave a mean of $8.30 with a standard deviation of $2.42. Find a 90% confidence interval for the mean amount left by all groups.
Construction of histogram and pie chart for continuous data
Use Chebyshev's theorem to determine what percent of values will fall between 58 and 82 for data set with mean of 70 and standard deviation of 4.
If the observed value is 4, the expected value is 5, and the standard error is 4, then the test value used for the z test is equal to
A sample of 64 Atlanta consumers showed a mean quarterly water bill of $51 with a sample standard deviation of $12. At α = .05, does the Atlanta sample support the conclusion that above-average rates exist for this private water system?
If true explain and if false give an example. a. The significance level of a statistical test is equal to the probability that the null hypothesis is true. b. If the significance level of a test is decreased, the power of the test would be expected t..
The value of R-square indicates the amounts of variation in the dependent variable that is explained by the independent variable.
Find out 90% confidence interval for the population average µ of the percentage of hospitals providing at least some charity care.
Conduct a hypothesis test to determine if the average cardiac outputs measured by the two evaluators differ. Use a significance level of 0.02.
The researchers claimed that of those who completed the program, 85% improved. What possible confounds can you identify in this study?
Determine the p-value, and at 95% confidence, test the hypotheses.
Decision making under risk is the same as decision making under uncertainty because in both the probabilities are unknown.
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