i need the answer for this question. tq An online retailer would like to study the repurchase intention of their customers.The shop has then surveyed its selected customers. The results have shown that 49out of 100 of the surveyed customers showed their intention of online repurchasingthe products of the shop.(a)(i)Construct a 95% confidence interval to estimate the population proportion ofcustomers who has an online repurchase intention towards the products of theshop.(ii) At a 0.01 significance level, is there any evidence that less than 55% of all thecustomers will have online repurchase intention towards the products of theshop?

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Answered: An online retailer would like to study…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 30PPS

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Similar questions

A researcher has found a strong relationship between level of education and income and concludes that “higher levels of education cause higher income.” What error has been made?
Suppose a marketing company computed a 96% confidence interval for the true proportion of customers who click on ads on their smartphones to be (0.59 , 0.71)
A Dean of a certain business school is interested in the difference in proportions of A's given by Professors I & II. Suppose the dean has access to 800 grade reports from each professor. It turns out that 240 students received A's from Professor I and 160 students received A's from Professor II. Construct a 95% confidence interval for the true differences in proportions of A's given by the two professors.
In a four-year psychedelic-mushroom experiment, 93 of the 300 subjects reported experiencing “strong or extreme fear” after using psychedelic mushrooms.(a) Find a point estimate for the percentage of all people who experience “strong or extreme fear” after using psychedelic mushrooms.(b) Find the 95% margin of error for the estimate in (a).(c) Make a 95% confidence interval for the percentage of all people who experience “strong or extreme fear” after using psychedelic mushrooms. Interpret the interval.
(b) A sample of 1200 network engineer job applications included 720 are from expatriates. Find the 90% confidence interval of the true proportion of expatriates who applied for the job.
In a clinical trial of a certain drug, 30 subjects experience headaches among the 220 subjects treated with the drug. Construct a 95% (Wald) confidence interval estimate for the proportion of treated subjects who experience headaches, completing parts (a) through (d) below.
A poll of 547 adult Americans employed full or part time asked, “Generally speaking, would you say your commute to work is –very stressful, somewhat stressful, not that stressful, not stressful at all?” The result reported that 12% of American workers said that their commute was very stressful. (a)Obtain a point estimate for the population proportion ? of all adult Americans who would say their commute time was very stressful. (b) Verify that the requirements for constructing a confidence interval about ? are satisfied. (c) Construct a 90% confidence interval for ?. (d) Interpret the interval in part (c) within the context.
Part 2(a) A bank conducted a survey to estimate the proportion of its customers who would be interestedin using a new app for mobile banking services. The bank found that 68 out of 150 customers arein favour of using the new app. Construct a(i) 95% confidence interval(ii) 90% confidence intervalFor the proportion of customers who are in favour of the new banking app. Thank you for your afford,

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