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Please provide answer the question to the fourth decimal place. I am just checking my answer... I completed the answers for A and B below, which you need to solve C.
Do social shoppers differ from other online consumers with respect to spending behavior? A study of browser-based shopping sessions reported that social shoppers, consumers who click away from social networks to retail sites or share an item on social network, spent a mean of 126.12 on a retail site in a 30-day period compared to other online shoppers who spent a mean of $115.55. (Data extracted from "Social shoppers spend 8% more than other online consumers," bit.ly/1FyyXP5.) Suppose that the study consisted of 500 social shoppers and 500 other online shoppers and the standard deviation of the order value was $40 for social shoppers and $10 for other online shoppers. Assume a level of significance of 0.05.
a) Is there evidence of a difference in the variances of the order values between social shoppers and other online shoppers? Yes. I used a upper-tail f-test for the difference of two variances.
b) Is there evidence of a difference in the mean order value between social shoppers and other online shoppers? Yes. I used a separate variance t-test for the difference of two means.
c) Construct a 95% confidence interval estimate for the difference in mean order value between social shoppers and other online shoppers.
A state-wide sample survey is to be made. First, the state is subdivided into counties. Seven counties are selected at random and further sampling is concentrated on these seven counties.
MATH1550H: Assignment: Question: what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?
Information about accessing the Blackboard Grading Rubric for this assignment is provided below.
Does the data suggest any discrepancy between the estimators - Is it possible to identify any interaction between estimators and jobs? Explain your answer.
Why do you think Leon Czolgosz was so unhappy with his life? Do you think his dissatisfaction revealed larger problems in American society?
What is d, the difference between any 2 terms? Using the formuls for the nth term of a arithmetic sequence, what is 101st term?
A month of sales data are collected on sales of different types of computer products Run the t-tests to determine:
what do they mean? with confidence interval? im just starting out and this is part of our homework for class. i dont
Find the value of the standard of the error of the mean in each of the following cases (use the finite population correction factor if appropriate.
Among the variables high school percentile, ACT English score, ACT math score, and ACT composite score, identify the one that appears to be the best predictor of cumulative GPA. Explain your reasoning.
How large a sample must be selected if the company wants to be 85% confident that the true mean differs from the sample mean by no more than 1 day?
WonderDrug Company wants to test the effectiveness of a new headache drug. What sampling technique (simple random, stratified random, cluster, convenience) is WonderDrug Company using in each of the following studies?
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